Anatomy and Physiology of Plants

Nutrition - Types of nutrition in plants (Autotrophism and Heterotrophism)
Nutrition - Parasitism as a mode of nutrition in plants
Nutrition - Saprophytic, symbiotic and insectivorous modes of nutrition
Nutrition - Structure of the chloroplast

By the end of the lesson, the learner should be able to:
- Describe the meaning of autotrophism and heterotrophism in plants
- Classify plants according to their mode of nutrition
- Recognise that plants in the local environment use different strategies to obtain nutrients
- Explain parasitism as a mode of heterotrophic nutrition in plants
- Distinguish between full and partial parasitic plants
- Identify parasitic plants in the local environment and explain their impact on host plants

In groups, learners are guided to:
- Search for information from print and non-print media on the types of nutrition in plants and share with peers
- Study pictures showing autotrophic and heterotrophic plants and identify their modes of nutrition
- Discuss the meaning of autotrophism and heterotrophism with classmates
- Brainstorm on the meaning of parasitism as a mode of nutrition in heterotrophic plants
- Study pictures of parasitic plants and describe how they depend on host plants for survival
- Discuss examples of parasitic plants in the local environment

How do plants obtain nutrients from their environment?
How do parasitic plants obtain nutrients from their host?

- Distinction Biology Learner's Book Grade 10 pg. 107
- Digital resources
- Charts showing autotrophic and heterotrophic plants
- Distinction Biology Learner's Book Grade 10 pg. 109
- Digital resources
- Pictures of parasitic plants
- Distinction Biology Learner's Book Grade 10 pg. 110
- Pictures/charts of insectivorous plants
- Distinction Biology Learner's Book Grade 10 pg. 112
- Charts/diagrams of chloroplast structure

- Oral questions - Observation - Written assignments

Anatomy and Physiology of Plants

Nutrition - Function of the chloroplast in plants
Nutrition - The process of photosynthesis
Nutrition - The light stage of photosynthesis

By the end of the lesson, the learner should be able to:
- Relate the structure of the chloroplast to its function in plant cells
- Explain the role of chlorophyll, grana and stroma in photosynthesis
- Link the abundance of chloroplasts in palisade cells to why the upper leaf surface is the main site for food manufacture

In groups, learners are guided to:
- Discuss the structure of the chloroplast in relation to its function (chlorophyll traps light, grana provide large surface area, stroma has enzymes)
- Use reference materials to search for information on the function of chloroplast in plants

How does the structure of the chloroplast enable it to carry out its function?

- Distinction Biology Learner's Book Grade 10 pg. 113
- Digital resources
- Internet access
- Distinction Biology Learner's Book Grade 10 pg. 114
- Distinction Biology Learner's Book Grade 10 pg. 115
- Charts/flow charts

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants

Nutrition - The dark stage of photosynthesis
Nutrition - Comparing the light and dark stages of photosynthesis

By the end of the lesson, the learner should be able to:
- Describe the dark (light independent) stage of photosynthesis
- Illustrate the dark stage of photosynthesis using a word equation
- Explain how glucose from the dark stage is eventually stored as starch in foods like potatoes and cereals

In groups, learners are guided to:
- Discuss the dark stage of photosynthesis (carbon (IV) oxide fixation)
- Illustrate the dark stage using word equations showing combination of carbon (IV) oxide and hydrogen atoms to form glucose and water
- Identify the site of dark stage in the chloroplast (stroma)

How is carbon (IV) oxide fixed during the dark stage of photosynthesis?

- Distinction Biology Learner's Book Grade 10 pg. 116
- Digital resources
- Charts/flow charts
- Distinction Biology Learner's Book Grade 10 pg. 115
- Charts comparing stages

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants

Nutrition - Significance of photosynthesis in nature
Nutrition - Other products of photosynthesis

By the end of the lesson, the learner should be able to:
- Explain the importance of photosynthesis to plants, animals and the environment
- Discuss how photosynthesis ensures food security in the community
- Connect photosynthesis to combating global warming through tree planting and forest conservation

In groups, learners are guided to:
- Discuss the importance of photosynthesis to plants (food production, energy), animals (oxygen, food chains) and the environment (carbon (IV) oxide removal)
- Explain how photosynthesis helps solve global warming by removing carbon (IV) oxide from the atmosphere
- Discuss how photosynthesis ensures food security

How does photosynthesis benefit both plants and animals?

- Distinction Biology Learner's Book Grade 10 pg. 118
- Digital resources
- Charts on importance of photosynthesis
- Distinction Biology Learner's Book Grade 10 pg. 117
- Internet access

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants

Nutrition - Assessment and review on nutrition in plants
Transport - External structures of the plant transport system
Transport - Structure and function of roots in transport
Transport - Internal structure of the root (transverse section)
Transport - Structure and function of stems in transport

By the end of the lesson, the learner should be able to:
- Answer questions on types of nutrition, chloroplast structure and photosynthesis
- Illustrate the stages of photosynthesis correctly
- Value the role of photosynthesis in sustaining life on earth by discussing real-life examples like oxygen production and food chains
- Describe the regions of the root (cell division, elongation and differentiation)
- Relate the structure of the root to its function in absorption and transport
- Explain why seedlings with damaged root hairs wilt faster than those with intact roots

In groups, learners are guided to:
- Answer assessment exercise questions on nutrition in plants
- Draw and label the chloroplast and identify parts where light and dark stages occur
- Discuss the mode of nutrition shown in given pictures (e.g., mould growing on bread)
- Study the longitudinal section of a dicotyledonous root and identify regions of cell division, elongation and differentiation
- Discuss how root hairs increase the surface area for absorption of water and mineral salts
- Draw and label the longitudinal section of a root

How do the different types of nutrition and photosynthesis sustain plant life?
How is the root adapted to absorb water and mineral salts?

- Distinction Biology Learner's Book Grade 10 pg. 119
- Digital resources
- Past assessment questions
- Distinction Biology Learner's Book Grade 10 pg. 120
- Fresh plant specimens
- Distinction Biology Learner's Book Grade 10 pg. 121
- Digital resources
- Charts of root structure
- Distinction Biology Learner's Book Grade 10 pg. 123
- Charts/photomicrographs of root cross-sections
- Distinction Biology Learner's Book Grade 10 pg. 125
- Fresh plant stems
- Charts of stem cross-sections

- Written tests - Oral questions - Observation
- Oral questions - Observation - Written assignments

Anatomy and Physiology of Plants

Transport - Structure and function of leaves in transport
Transport - Structure, functions and adaptations of xylem vessels
Transport - Structure, functions and adaptations of phloem tissue

By the end of the lesson, the learner should be able to:
- Describe the role of the leaf in transport (transpiration and translocation)
- Identify the vascular tissues involved in leaf transport
- Explain why leaves of potted plants placed near a sunny window lose water faster through transpiration

In groups, learners are guided to:
- Discuss the structure of the leaf in relation to its transport function
- Identify materials transported within the leaf (water, mineral salts, food materials)
- Discuss transpiration and translocation as transport processes in the leaf

What role does the leaf play in the transport system of plants?

- Distinction Biology Learner's Book Grade 10 pg. 127
- Digital resources
- Fresh plant leaves
- Distinction Biology Learner's Book Grade 10 pg. 129
- Charts/diagrams of xylem vessels
- Distinction Biology Learner's Book Grade 10 pg. 131
- Charts/diagrams of phloem tissue

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants

Transport - Arrangement of vascular tissues in roots of monocots and dicots (Practical)
Transport - Arrangement of vascular tissues in stems of monocots and dicots (Practical)

By the end of the lesson, the learner should be able to:
- Observe and draw cross-sections of monocotyledonous and dicotyledonous roots under a microscope
- Compare the arrangement of vascular tissues in roots of monocots and dicots
- Handle laboratory apparatus such as microscopes and scalpels safely and responsibly

In groups, learners are guided to:
- Cut thin cross-sections of monocotyledonous and dicotyledonous roots, stain with iodine solution and observe under a microscope
- Draw well-labelled cross-sectional drawings of monocot and dicot roots
- Compare the arrangement of vascular tissues in the two types of roots

How does the arrangement of vascular tissues differ in roots of monocots and dicots?

- Distinction Biology Learner's Book Grade 10 pg. 133
- Light microscope
- Fresh plant roots
- Iodine solution, scalpel, glass slides, cover slips
- Distinction Biology Learner's Book Grade 10 pg. 135
- Fresh plant stems

- Observation - Practical assessment - Written assignments

Anatomy and Physiology of Plants

Transport - Mechanisms of water uptake in plants (osmosis and active transport)
Transport - Movement of water up the plant (transpiration pull, cohesion, adhesion, capillarity, root pressure)

By the end of the lesson, the learner should be able to:
- Describe the mechanisms of water uptake in plants (osmosis, active transport)
- Explain how water moves from soil particles to the xylem vessels in the root
- Relate osmosis in root hair cells to why plants wilt when placed in very salty soil

In groups, learners are guided to:
- Search for information on mechanisms of water and mineral salt uptake in plants
- Study diagrams showing the absorption of water by plant roots
- Discuss how water moves from the soil particles through the root hair cells to the xylem vessels by osmosis

How does water move from the soil into the root of a plant?

- Distinction Biology Learner's Book Grade 10 pg. 137
- Digital resources
- Charts showing water absorption in plants
- Distinction Biology Learner's Book Grade 10 pg. 139
- Internet access

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants

Transport - Absorption of mineral salts and demonstrating water uptake (Practical)
Transport - The process of transpiration
Transport - Structural factors affecting the rate of transpiration

By the end of the lesson, the learner should be able to:
- Explain the mechanism of mineral salt absorption (active transport and diffusion)
- Carry out an experiment to demonstrate uptake of water in plants using dye/ink
- Handle chemicals like food colouring safely and dispose of waste materials responsibly after the experiment
- Describe the structural factors that affect the rate of transpiration (leaf size, leaf surface, number and position of stomata, leaf hairs)
- Explain how each structural factor affects transpiration rate
- Explain why cactus plants survive in arid areas by relating their leaf structure to reduced water loss

In groups, learners are guided to:
- Discuss how mineral salts are absorbed by active transport and diffusion
- Carry out a dye/ink experiment to demonstrate uptake of water in plants
- Observe exudation and guttation in the experimental set-up and draw conclusions
- Discuss structural factors affecting the rate of transpiration (broad lamina, glossy surface, number of stomata, sunken stomata, leaf hairs)
- Explain midday closure and reversed stomatal rhythm
- Search for information on structural factors using available reference materials

How are mineral salts absorbed by plant roots?
How do leaf structures influence the rate of water loss in plants?

- Distinction Biology Learner's Book Grade 10 pg. 141
- Fresh young plants
- Food colouring/ink
- Glass beaker, scalpel, distilled water
- Distinction Biology Learner's Book Grade 10 pg. 143
- Digital resources
- Charts of leaf internal structure
- Distinction Biology Learner's Book Grade 10 pg. 145
- Digital resources
- Internet access

- Practical assessment - Observation - Written assignments
- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants

Transport - Environmental factors affecting the rate of transpiration (Temperature and light intensity practicals)
Transport - Environmental factors affecting the rate of transpiration (Wind practical and other factors)

By the end of the lesson, the learner should be able to:
- Carry out experiments to demonstrate the effect of temperature and light intensity on transpiration
- Explain how temperature and light intensity affect the rate of transpiration
- Set up a control experiment and explain its purpose in ensuring valid results

In groups, learners are guided to:
- Carry out an experiment using a heat bulb to demonstrate the effect of temperature on transpiration
- Carry out an experiment using a light bulb to demonstrate the effect of light intensity on transpiration
- Compare condensation on plastic bottles/carrier bags in both experiments and draw conclusions

How do temperature and light intensity affect the rate of transpiration?

- Distinction Biology Learner's Book Grade 10 pg. 147
- Potted plants
- Heat bulb, light bulb
- Transparent carrier bags, elastic bands
- Distinction Biology Learner's Book Grade 10 pg. 149
- Improvised fan materials

- Practical assessment - Observation - Written assignments

Anatomy and Physiology of Plants

Transport - Translocation of manufactured food in plants

By the end of the lesson, the learner should be able to:
- Define translocation and describe the process in plants
- Identify the materials transported during translocation (sucrose, amino acids, vitamins)
- Relate translocation to why fruits, roots and seeds store food, as seen in everyday crops like sugarcane and sweet potatoes

In groups, learners are guided to:
- Discuss the process of translocation of manufactured food from the leaves to other parts of the plant
- Watch animations on translocation and share with peers
- Identify the vascular tissues (phloem) involved in translocation

How is manufactured food transported from the leaves to other parts of the plant?

- Distinction Biology Learner's Book Grade 10 pg. 151
- Digital resources
- Internet access

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants

Transport - Demonstrating translocation by bark ringing and significance of transport in plants
Gaseous Exchange and Respiration - Meaning and significance of gaseous exchange in plants
Gaseous Exchange and Respiration - Stomata as a site for gaseous exchange (Practical)

By the end of the lesson, the learner should be able to:
- Carry out a bark ringing (girdling) experiment to demonstrate translocation
- Explain the importance of transport in plants
- Carry out bark ringing responsibly without destroying the entire plant, showing care for the environment

In groups, learners are guided to:
- Carry out a bark ringing/girdling experiment on a young tree to demonstrate translocation
- Observe the swelling above the ring and wilting below and draw conclusions
- Discuss the importance of transport in plants (distribution of nutrients, removal of waste products)

What evidence confirms translocation of food in plants?

- Distinction Biology Learner's Book Grade 10 pg. 153
- Young tree/woody plant
- Knife, permanent marker pen
- Digital device for recording
- Distinction Biology Learner's Book Grade 10 pg. 151
- Digital resources
- Internet access
- Distinction Biology Learner's Book Grade 10 pg. 155
- Fresh plant leaves
- Clear nail polish
- Light microscope, glass slides, cover slips

- Practical assessment - Observation - Written assignments

Anatomy and Physiology of Plants

Gaseous Exchange and Respiration - Distribution of stomata in different plant habitats
Gaseous Exchange and Respiration - Lenticels as gaseous exchange sites in stems
Gaseous Exchange and Respiration - Pneumatophores as gaseous exchange sites in roots
Gaseous Exchange and Respiration - Photosynthetic theory of stomatal opening and closing
Gaseous Exchange and Respiration - Starch-sugar inter-conversion theory
Gaseous Exchange and Respiration - Potassium ion theory of stomatal opening and closing

By the end of the lesson, the learner should be able to:
- Describe the distribution of stomata in xerophytes, hydrophytes and mesophytes
- Investigate the number, size and distribution of stomata in leaves from different habitats
- Explain why water lilies have stomata on the upper surface while desert plants have few sunken stomata on the lower surface
- Describe the mechanism of opening and closing of stomata using the photosynthetic theory
- Explain how glucose production during photosynthesis makes guard cells turgid
- Relate why most plants have open stomata during the day and closed stomata at night to everyday observations of morning dew on grass

In groups, learners are guided to:
- Collect fresh leaves from plants in different habitats and observe stomatal distribution under a microscope
- Count the number of stomata and observe their sizes and distribution on both sides of the leaf
- Discuss adaptations of stomata in xerophytes (few, sunken, thick cuticle), hydrophytes (numerous, upper epidermis) and mesophytes (evenly distributed)
- Search for information on the photosynthetic theory explaining the mechanism of opening and closing of stomata
- Discuss how during the day, photosynthesis produces glucose increasing osmotic pressure causing guard cells to become turgid and stomata to open
- Discuss how at night, glucose is converted to starch reducing osmotic pressure causing stomata to close

How does the habitat of a plant influence the distribution of stomata on its leaves?
How does photosynthesis influence the opening of stomata during the day?

- Distinction Biology Learner's Book Grade 10 pg. 157
- Fresh leaf samples from different habitats
- Light microscope, nail polish
- Glass slides, cover slips
- Distinction Biology Learner's Book Grade 10 pg. 161
- Photomicrographs of lenticels
- Digital resources
- Distinction Biology Learner's Book Grade 10 pg. 163
- Photomicrographs/pictures of pneumatophores
- Distinction Biology Learner's Book Grade 10 pg. 165
- Digital resources
- Charts showing open and closed stomata
- Distinction Biology Learner's Book Grade 10 pg. 167
- Internet access
- Distinction Biology Learner's Book Grade 10 pg. 168
- Internet access
- Charts comparing the three theories

- Practical assessment - Observation - Written assignments
- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants

Gaseous Exchange and Respiration - The process of respiration and aerobic respiration
Gaseous Exchange and Respiration - Anaerobic respiration in plants

By the end of the lesson, the learner should be able to:
- Define respiration and state the word equation for aerobic respiration
- Describe the stages of aerobic respiration (glycolysis and Kreb's cycle)
- Connect aerobic respiration to why living cells need a constant supply of oxygen to release energy for growth and repair

In groups, learners are guided to:
- Search for information on the process of respiration and discuss with peers
- Identify the cell organelle where respiration occurs (mitochondria)
- Discuss aerobic respiration including glycolysis (cytoplasm) and Kreb's cycle (matrix of mitochondria)

How do plants break down glucose to release energy?

- Distinction Biology Learner's Book Grade 10 pg. 169
- Digital resources
- Internet access
- Distinction Biology Learner's Book Grade 10 pg. 171

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants

Gaseous Exchange and Respiration - Investigating aerobic and anaerobic respiration (Practical)

By the end of the lesson, the learner should be able to:
- Carry out experiments to distinguish between aerobic and anaerobic respiration
- Explain the role of calcium hydroxide solution and paraffin in the experiments
- Observe safety precautions when handling chemicals and dispose of waste materials appropriately after the experiment

In groups, learners are guided to:
- Set up experiments using germinating bean seeds to demonstrate aerobic respiration (test tube A) and boiled bean seeds to demonstrate anaerobic respiration (test tube B)
- Observe the colour change of calcium hydroxide solution and record temperature readings
- Discuss the role of paraffin in blocking oxygen entry

How can aerobic and anaerobic respiration be demonstrated experimentally?

- Distinction Biology Learner's Book Grade 10 pg. 172
- Germinating and boiled bean seeds
- Test tubes, delivery tubes, rubber stoppers
- Calcium hydroxide solution, paraffin, glucose solution

- Practical assessment - Observation - Written assignments

Anatomy and Physiology of Plants

Gaseous Exchange and Respiration - Economic importance of anaerobic respiration
Gaseous Exchange and Respiration - Biogas production project

By the end of the lesson, the learner should be able to:
- Explain the economic importance of anaerobic respiration in various industries
- Describe how anaerobic respiration is applied in brewing, baking, dairy and biogas production
- Relate anaerobic respiration to locally made products like yoghurt, cheese, bread and traditional fermented drinks

In groups, learners are guided to:
- Discuss the economic importance of anaerobic respiration in brewing, baking, biogas production, dairy industry, sewage treatment, silage formation, pharmaceutical industry and compost manure production
- Explain how yeast breaks down sugars anaerobically in brewing and baking
- Discuss how bacteria produce lactic acid in dairy products

How is anaerobic respiration applied in everyday industries and products?

- Distinction Biology Learner's Book Grade 10 pg. 174
- Digital resources
- Charts showing applications of anaerobic respiration
- Distinction Biology Learner's Book Grade 10 pg. 175
- Large plastic bottle/container
- Organic waste, water
- Rubber tubing, balloon, tape

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants
Anatomy and Physiology of Plants
Anatomy and Physiology of Animals
Anatomy and Physiology of Animals

Gaseous Exchange and Respiration - Significance of gaseous exchange and respiration to plants and the environment
Gaseous Exchange and Respiration - Assessment and review on gaseous exchange and respiration
Mouthparts of insects - Structure of mouthparts of insects and their functions
Mouthparts of insects - Biting and chewing mouthparts

By the end of the lesson, the learner should be able to:
- Outline the significance of gaseous exchange and respiration to plants and the environment
- Design a portfolio illustrating the significance of gaseous exchange and respiration
- Relate the significance of gaseous exchange to why deforestation contributes to climate change and why reforestation is encouraged
- Answer assessment questions on gaseous exchange sites, stomatal mechanisms, types of respiration and economic importance of anaerobic respiration
- Distinguish between gaseous exchange and respiration in plants
- Connect the concepts learned to real-life applications such as food preservation, energy production and environmental conservation

In groups, learners are guided to:
- Discuss the significance of gaseous exchange and respiration to plants (energy production, growth, photosynthesis) and the environment (oxygen supply, carbon cycling, temperature regulation)
- Design a portfolio illustrating the significance of gaseous exchange and respiration
- Show portfolios to peers for assessment
- Answer assessment exercise questions on gaseous exchange and respiration
- Distinguish between gaseous exchange and respiration
- Identify and explain adaptations of gaseous exchange structures (stomata, lenticels, pneumatophores, aerenchyma)
- Describe mechanisms of opening and closing of stomata using the three theories

How do gaseous exchange and respiration contribute to the survival of plants and the environment?
How are gaseous exchange and respiration essential to the survival of plants?

- Distinction Biology Learner's Book Grade 10 pg. 177
- Digital resources
- Portfolio materials
- Distinction Biology Learner's Book Grade 10 pg. 178
- Digital resources
- Past assessment questions
- Distinction Biology Learner's Book pg. 175
- Fresh locust, grasshopper or cockroach
- Hand lens or dissecting microscope
- Pair of forceps
- Petri dish
- Protective clothing
- Internet access
- Charts showing mouthparts of insects

- Portfolio assessment - Oral questions - Observation
- Written tests - Oral questions - Observation

Anatomy and Physiology of Animals

Mouthparts of insects - Piercing and sucking mouthparts
Mouthparts of insects - Siphoning mouthparts
Mouthparts of insects - Comparing mouthparts and modes of feeding

By the end of the lesson, the learner should be able to:
- Describe the piercing and sucking mode of feeding in mosquitoes and tsetse flies
- Relate the structure of the mouthparts of a mosquito and tsetse fly to their mode of feeding
- Connect the study of piercing and sucking mouthparts to real-life issues such as disease transmission by mosquitoes and tsetse flies

In groups, learners are guided to:
- Study photographs and illustrations of mouthparts of a mosquito and tsetse fly
- Use digital devices to watch video animations on piercing and sucking mouthparts
- Discuss how the maxillae of mosquitoes pierce the skin and how the salivary glands prevent blood clotting
- Compare the mouthparts of a mosquito and tsetse fly

How do the mouthparts of a mosquito enable it to pierce skin and suck blood?

- Distinction Biology Learner's Book pg. 177
- Digital resources
- Internet access
- Photographs of mosquito and tsetse fly mouthparts
- Distinction Biology Learner's Book pg. 178
- Photographs of butterfly mouthparts
- Distinction Biology Learner's Book pg. 179
- Charts showing mouthparts of various insects
- Internet access

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Animals

Beaks of birds - Structure of beaks of birds
Beaks of birds - Filter feeders, fish eaters and wood chippers
Beaks of birds - Fruit eaters, multipurpose feeders and insect eaters

By the end of the lesson, the learner should be able to:
- Identify different types of beaks in birds
- Describe the structure of beaks in seed eaters, flesh eaters and nectar feeders
- Relate bird beak diversity to everyday observations such as sparrows feeding on grains and eagles hunting prey

In groups, learners are guided to:
- Observe images, animations and charts of beaks of birds with different modes of feeding
- Use digital devices to search for information on the structure of beaks of seed eaters, flesh eaters and nectar feeders
- Discuss how the beaks of sparrows, eagles and sunbirds are adapted to their mode of feeding
- Draw and label beaks of different birds

How does the shape of a bird's beak determine what it feeds on?

- Distinction Biology Learner's Book pg. 181
- Digital resources
- Internet access
- Charts and photographs of bird beaks
- Distinction Biology Learner's Book pg. 183
- Photographs of bird beaks
- Photographs and charts of bird beaks

- Oral questions - Labelled drawings - Observation

Anatomy and Physiology of Animals

Beaks of birds - Nature walk to observe birds and their feeding habits
Beaks of birds - Comparing beaks and modes of feeding in birds

By the end of the lesson, the learner should be able to:
- Observe different birds in their natural habitats
- Relate the structure of beaks of observed birds to their feeding habits
- Recognise the importance of protecting birds and their habitats in the local environment for biodiversity conservation

In groups, learners are guided to:
- Undertake a nature walk to observe different birds and their feeding habits
- Use binoculars and magnifying glasses where available to observe the shape and size of beaks
- Use digital devices to take pictures of birds as they feed
- Write a short report on the observed birds and their feeding habits
- Wear personal protective equipment during the nature walk

What types of birds are found in the school environment and how do their beaks relate to their feeding habits?

- Distinction Biology Learner's Book pg. 184
- Binoculars (optional)
- Magnifying glass
- Digital devices
- Protective clothing such as reflective vests and proper shoes
- Distinction Biology Learner's Book pg. 185
- Charts and photographs of bird beaks
- Digital resources
- Internet access

- Written reports - Observation - Oral presentations

Anatomy and Physiology of Animals

Importance of diversity in feeding modes of insects and birds
Significance of transport in animals
Types of circulatory systems - Open and closed circulatory systems
Types of circulatory systems - Single and double circulatory systems
Transport system in insects
Transport system in fish - Structure and blood flow

By the end of the lesson, the learner should be able to:
- Explain the importance of diversity in feeding modes of insects and birds in nature
- Describe how diversity in feeding modes helps in pollination, seed dispersal and pest control
- Relate feeding diversity to real-life environmental benefits such as how insect-eating birds reduce crop pests in farms and how nectar-feeding insects support fruit production
- Distinguish between open and closed circulatory systems in animals
- Illustrate open and closed circulatory systems
- Relate open circulatory systems to familiar organisms such as grasshoppers and cockroaches found in the local environment

In groups, learners are guided to:
- Discuss the importance of diversity in feeding modes of insects and birds in nature
- Explain how diversity in feeding modes of insects and birds helps in plant pollination and seed dispersal
- Describe how birds feeding on insects help in controlling pests in the environment
- Analyse a wheel chart on the importance of diversity in feeding modes
- Search for information on open and closed circulatory systems using reference materials and the Internet
- Study illustrations of open and closed circulatory systems
- Discuss how the transport fluid flows in open and closed circulatory systems
- Draw and label diagrams of open and closed circulatory systems

How does the diversity in feeding modes of insects and birds benefit the environment?
How does the flow of transport fluid differ in open and closed circulatory systems?

- Distinction Biology Learner's Book pg. 185
- Digital resources
- Internet access
- Charts on importance of feeding diversity
- Distinction Biology Learner's Book pg. 186
- Reference books
- Distinction Biology Learner's Book pg. 188
- Digital resources
- Internet access
- Charts showing circulatory systems
- Distinction Biology Learner's Book pg. 189
- Charts showing single and double circulation
- Distinction Biology Learner's Book pg. 190
- Charts showing insect circulatory system
- Distinction Biology Learner's Book pg. 192
- Charts showing fish circulatory system

- Oral questions - Written assignments - Class discussions
- Oral questions - Labelled drawings - Written assignments

Anatomy and Physiology of Animals

Transport system in fish - Illustrating the circulatory system
Transport system in amphibians - Structure and blood flow
Transport system in amphibians - Illustrating the circulatory system

By the end of the lesson, the learner should be able to:
- Illustrate the structure of the transport system in fish
- Explain why fish have a single closed circulatory system
- Relate the efficiency of the fish circulatory system to real-life observations of how fish remain active in water

In groups, learners are guided to:
- Draw a well-labelled diagram of the circulatory system in fish
- Use digital devices to search for video animations of the transport system in fish
- Exchange exercise books with peers for peer assessment of drawings
- Discuss the advantages of a single closed circulatory system in fish

Why is the circulatory system in fish described as a single closed system?

- Distinction Biology Learner's Book pg. 193
- Digital resources
- Internet access
- Reference books
- Distinction Biology Learner's Book pg. 194
- Charts showing amphibian circulatory system
- Distinction Biology Learner's Book pg. 195

- Peer assessment of drawings - Oral questions - Written assignments

Anatomy and Physiology of Animals

Transport system in reptiles - Structure and blood flow
Transport system in reptiles - Illustrating the circulatory system

By the end of the lesson, the learner should be able to:
- Identify the structures that compose the transport system in reptiles
- Describe pulmonary and systemic circulation in reptiles
- Connect the partial septum in the reptile heart to real-life understanding of why reptiles like chameleons and lizards bask in the sun to regulate body temperature

In groups, learners are guided to:
- Search for information on the transport system in reptiles using print and non-print resources
- Study illustrations of the circulatory system in reptiles
- Identify the three-chambered heart with a partial septum and the four-chambered heart of the crocodile
- Describe pulmonary and systemic circulation in reptiles

How does the partial septum in the reptile heart reduce mixing of blood?

- Distinction Biology Learner's Book pg. 197
- Digital resources
- Internet access
- Charts showing reptile circulatory system
- Distinction Biology Learner's Book pg. 198
- Reference books

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Animals

Transport system in mammals - Structure and components

By the end of the lesson, the learner should be able to:
- Identify the structures that compose the transport system in mammals
- Describe the components of the mammalian circulatory system
- Relate the four-chambered mammalian heart to real-life understanding of why mammals like humans can perform sustained physical activities

In groups, learners are guided to:
- Search for information on the transport system in mammals using print and non-print resources
- Study illustrations and photographs of the circulatory system in mammals
- Identify the four-chambered heart, blood vessels, blood and circulatory pathways
- Discuss the components of the mammalian circulatory system

What are the key components of the mammalian transport system?

- Distinction Biology Learner's Book pg. 199
- Digital resources
- Internet access
- Charts showing mammalian circulatory system

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Animals

Transport system in mammals - Pulmonary and systemic circulation
Transport system in mammals - Illustrating the circulatory system
Transport system in mammals - Dissection of a small mammal

By the end of the lesson, the learner should be able to:
- Describe pulmonary and systemic circulation in mammals
- Trace the pathway of blood flow in the mammalian circulatory system
- Connect double circulation in mammals to real-life experiences like increased heartbeat rate during running or exercise
- Dissect a small mammal to observe parts of the transport system
- Identify the heart, lungs, blood vessels and other organs of the transport system
- Handle specimens humanely and relate the observed structures to how the circulatory system supports life in real mammals

In groups, learners are guided to:
- Use digital devices to search for video animations illustrating the transport system in mammals
- Trace the pathway of blood flow in the mammalian circulatory system
- Describe pulmonary circulation (heart to lungs and back) and systemic circulation (heart to body and back)
- Discuss with peers
- Wear protective clothing (hand gloves and laboratory coat)
- With the help of the teacher, carry out the dissection of a freshly killed rat or rabbit
- Observe the thoracic cavity containing the heart and lungs
- Identify the pulmonary vein, pulmonary artery, blood vessels and renal veins
- Draw a well-labelled diagram of the transport system of the mammal

How does blood flow through the mammalian heart in pulmonary and systemic circulation?
What structures can be observed in the transport system of a dissected mammal?

- Distinction Biology Learner's Book pg. 200
- Digital resources
- Internet access
- Reference books
- Distinction Biology Learner's Book pg. 201
- Freshly killed rat or rabbit
- Dissecting board and pins
- Cotton wool
- Hand lens
- Protective clothing

- Oral questions - Written assignments - Class discussions
- Labelled drawings - Observation - Oral questions

Anatomy and Physiology of Animals

Pumping mechanism of the mammalian heart - Structure of the heart
Pumping mechanism of the mammalian heart - The cardiac cycle

By the end of the lesson, the learner should be able to:
- Describe the structure of the mammalian heart including its four chambers
- Identify the blood vessels that carry blood to and from the heart
- Relate the structure of the heart to real-life understanding of heartbeat sounds heard through a stethoscope during medical check-ups

In groups, learners are guided to:
- Study illustrations of the mammalian heart
- Identify the four chambers (right atrium, left atrium, right ventricle and left ventricle)
- Identify blood vessels connected to the heart (vena cava, aorta, pulmonary artery and pulmonary vein)
- Discuss the roles of the ventricles, atria and valves in pumping blood

What is the role of each chamber and valve in the mammalian heart?

- Distinction Biology Learner's Book pg. 202
- Digital resources
- Internet access
- Charts showing the mammalian heart
- Distinction Biology Learner's Book pg. 203
- Reference books

- Oral questions - Labelled drawings - Written assignments

Anatomy and Physiology of Animals

Human lymphatic system - Structure and components

By the end of the lesson, the learner should be able to:
- Describe the human lymphatic system
- Identify the components of the lymphatic system
- Relate the lymphatic system to real-life situations such as swelling of lymph nodes during infections like sore throat or tonsillitis

In groups, learners are guided to:
- Watch video animations on the human lymphatic system using digital devices
- Identify the components of the lymphatic system (lymph fluid, lymphatic vessels, lymph nodes and lymphoid organs)
- Discuss the structure and arrangement of the lymphatic system
- Share findings with peers for discussion

What are the components of the human lymphatic system and how are they arranged?

- Distinction Biology Learner's Book pg. 204
- Digital resources
- Internet access
- Charts showing the lymphatic system

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Animals

Human lymphatic system - Functions
Human immune system - Types of immunity

By the end of the lesson, the learner should be able to:
- Explain the functions of the human lymphatic system
- Describe how the lymphatic system helps maintain fluid balance and defend against infections
- Relate lymphatic functions to real-life examples such as how swollen ankles (oedema) occur when the lymphatic system fails to drain excess fluid

In groups, learners are guided to:
- Discuss the functions of the human lymphatic system including maintaining fluid balance, filtering pathogens and absorbing fats
- Explain how lymph nodes house immune cells that detect and fight infections
- Describe how the lymphatic system returns excess tissue fluid to the bloodstream
- Share work with classmates for comparison

How does the lymphatic system protect the body against infections?

- Distinction Biology Learner's Book pg. 205
- Digital resources
- Internet access
- Reference books
- Distinction Biology Learner's Book pg. 206
- Charts showing types of immunity

- Written assignments - Oral questions - Class discussions

Anatomy and Physiology of Animals

Human immune system - Active and passive immunity

By the end of the lesson, the learner should be able to:
- Distinguish between active and passive immunity
- Give examples of naturally and artificially acquired immunity
- Connect vaccination programmes in Kenya (such as polio and measles vaccines) to the concept of artificially acquired active immunity

In groups, learners are guided to:
- Discuss active immunity where the body produces its own antibodies when triggered by antigens
- Discuss passive immunity where the body receives antibodies from an external source
- Give examples such as breastfeeding (passive) and recovery from disease (active)
- Relate naturally and artificially acquired immunity to real-life vaccination programmes

How do vaccines help the body develop immunity against diseases?

- Distinction Biology Learner's Book pg. 207
- Digital resources
- Internet access
- Reference books

- Written assignments - Oral questions - Class discussions