Anatomy and Physiology of Plants

Nutrition - Autotrophic nutrition
Nutrition - Heterotrophic nutrition (Parasitic mode)
Nutrition - Heterotrophic nutrition (Saprophytic mode)

By the end of the lesson, the learner should be able to:

- Define autotrophic nutrition
- Describe how autotrophic plants manufacture their own food
- Recognize the importance of green plants in food production for ecosystems

In groups, learners are guided to:
- Search for information on types of nutrition in plants from print and non-print resources
- Discuss the meaning of autotrophic nutrition and share with peers
- Use digital devices to watch videos on how plants manufacture food

How do plants obtain their food?

- Spotlight Biology Learner's Book Grade 10 pg. 98
- Digital resources
- Charts showing plant nutrition
- Pictures of parasitic plants
- Digital resources
- Spotlight Biology Learner's Book Grade 10 pg. 99
- Pictures of saprophytic plants
- Reference books

- Oral questions - Observation - Written assignments

Anatomy and Physiology of Plants

Nutrition - Heterotrophic nutrition (Symbiotic mode)
Nutrition - Heterotrophic nutrition (Insectivorous mode)
Nutrition - Structure of the chloroplast
Nutrition - Functions of chloroplast parts
Nutrition - Introduction to photosynthesis
Nutrition - Light stage of photosynthesis

By the end of the lesson, the learner should be able to:

- Explain symbiotic mode of nutrition in plants
- Describe nitrogen fixation in root nodules of legumes
- Apply knowledge of symbiosis to improve soil fertility through crop rotation in farms

In groups, learners are guided to:
- Study photographs of root nodules in bean plants
- Discuss the relationship between Rhizobium bacteria and leguminous plants
- Search for information on how symbiosis benefits both organisms

How do leguminous plants benefit from bacteria in their root nodules?

- Spotlight Biology Learner's Book Grade 10 pg. 100
- Fresh specimens of legume roots with nodules
- Charts showing symbiosis
- Spotlight Biology Learner's Book Grade 10 pg. 101
- Pictures of insectivorous plants
- Video clips
- Digital resources
- Spotlight Biology Learner's Book Grade 10 pg. 103
- Photomicrographs of chloroplasts
- Charts
- Spotlight Biology Learner's Book Grade 10 pg. 104
- Models of chloroplasts
- Reference books
- Charts showing photosynthesis equation
- Spotlight Biology Learner's Book Grade 10 pg. 105
- Animations/video clips

- Observation - Oral questions - Written tests

Anatomy and Physiology of Plants

Nutrition - Dark stage of photosynthesis
Nutrition - Importance of photosynthesis to plants
Nutrition - Importance of photosynthesis to the environment
Transport - External structures of a plant
Transport - Adaptations of roots to their functions
Transport - Adaptations of stems and leaves

By the end of the lesson, the learner should be able to:

- Describe the dark stage (carbon fixation) of photosynthesis
- Explain how glucose is formed from carbon dioxide and hydrogen ions
- Relate glucose production to how plants store energy that later becomes our food source

- Identify the external parts of a plant (roots, stem, leaves)
- Describe the functions of each external plant part
- Relate plant structures to how plants obtain water, nutrients and produce food for human consumption

In groups, learners are guided to:
- Watch animations showing the dark stage of photosynthesis
- Discuss the role of enzymes in the stroma during carbon fixation
- Compare and contrast light and dark stages of photosynthesis
- Examine freshly uprooted herbaceous plants
- Draw well-labelled diagrams showing parts of a plant
- Discuss the functions of roots, stems and leaves in transport

How is glucose formed during the dark stage of photosynthesis?
What are the main parts of a plant and their functions in transport?

- Spotlight Biology Learner's Book Grade 10 pg. 106
- Animations/video clips
- Flow charts
- Digital resources
- Reference books
- Spotlight Biology Learner's Book Grade 10 pg. 107
- Charts
- Digital resources
- Reference books
- Spotlight Biology Learner's Book Grade 10 pg. 110
- Fresh plant specimens
- Hand lens
- Charts
- Spotlight Biology Learner's Book Grade 10 pg. 111
- Fresh root specimens
- Charts showing root structure
- Plant specimens
- Charts
- Digital resources

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

Anatomy and Physiology of Plants

Transport - Arrangement of vascular tissues in dicotyledonous roots
Transport - Arrangement of vascular tissues in monocotyledonous roots
Transport - Arrangement of vascular tissues in dicotyledonous stems

By the end of the lesson, the learner should be able to:

- Describe the arrangement of vascular tissues in dicotyledonous roots
- Prepare and observe transverse sections of dicotyledonous roots
- Identify how vascular arrangement enables efficient water transport in common crops like beans

In groups, learners are guided to:
- Cut thin transverse sections of bean roots
- Mount sections on slides and observe under microscope
- Draw and label cross-sections of dicotyledonous roots

How are vascular tissues arranged in dicotyledonous roots?

- Spotlight Biology Learner's Book Grade 10 pg. 113
- Bean seedlings
- Light microscope
- Scalpels
- Slides and cover slips
- Spotlight Biology Learner's Book Grade 10 pg. 114
- Maize seedlings
- Spotlight Biology Learner's Book Grade 10 pg. 115
- Permanent slides
- Charts

- Practical assessment - Observation - Oral questions

Anatomy and Physiology of Plants

Transport - Arrangement of vascular tissues in monocotyledonous stems
Transport - Mechanisms of water absorption
Transport - Root pressure and capillarity

By the end of the lesson, the learner should be able to:

- Describe the arrangement of vascular tissues in monocotyledonous stems
- Compare vascular arrangement in monocot and dicot stems
- Differentiate grass and maize stems from tree stems based on their internal structure

In groups, learners are guided to:
- Mount permanent slides of monocotyledonous stems on microscope
- Compare scattered vascular bundles in monocots with ring arrangement in dicots
- Discuss differences and similarities between monocot and dicot stems

How does vascular tissue arrangement differ in monocot and dicot stems?

- Spotlight Biology Learner's Book Grade 10 pg. 116
- Permanent slides
- Light microscope
- Charts
- Spotlight Biology Learner's Book Grade 10 pg. 117
- Animations/video clips
- Charts
- Digital resources
- Spotlight Biology Learner's Book Grade 10 pg. 118
- Reference books

- Written tests - Oral questions - Practical assessment

Anatomy and Physiology of Plants

Transport - Transpiration pull
Transport - Demonstrating water uptake in plants
Transport - Demonstrating transpiration

By the end of the lesson, the learner should be able to:

- Explain transpiration pull as the main force for water movement in plants
- Describe how water evaporation from leaves creates a pulling force
- Connect transpiration to how tall trees like eucalyptus transport water to their topmost leaves

In groups, learners are guided to:
- Discuss how transpiration creates an osmotic gradient in xylem
- Explain the role of cohesion in maintaining continuous water column
- Watch animations showing transpiration pull mechanism

How does transpiration pull water up through tall plants?

- Spotlight Biology Learner's Book Grade 10 pg. 119
- Animations
- Charts
- Digital resources
- Kales or cabbage leaves
- Blue and red dyes
- Beakers
- Scalpels
- Spotlight Biology Learner's Book Grade 10 pg. 120
- Potted plants
- Transparent polythene bags
- Sunlight

- Written tests - Oral questions - Observation

Anatomy and Physiology of Plants

Transport - Environmental factors affecting transpiration (Temperature and light)
Transport - Environmental factors affecting transpiration (Wind and humidity)
Transport - Structural factors affecting transpiration
Transport - Mechanism of translocation
Transport - Bark ringing experiment
Transport - Importance of transport in plants

By the end of the lesson, the learner should be able to:

- Investigate how temperature and light intensity affect transpiration rate
- Use a potometer to measure rate of water uptake
- Relate these factors to why plants wilt faster on hot sunny days

- Define translocation
- Describe how manufactured food is transported in plants
- Relate translocation to how fruits develop and storage organs like potatoes and carrots store food

In groups, learners are guided to:
- Set up potometer with leafy shoots
- Place set-ups near electric heater and in bright sunshine
- Record time taken for air bubble to move along capillary tube
- Search for information on translocation in plants
- Discuss cytoplasmic streaming, mass flow and active transport
- Watch animations showing movement of food through phloem

How do temperature and light intensity affect the rate of transpiration?
How is manufactured food transported from leaves to other parts of the plant?

- Spotlight Biology Learner's Book Grade 10 pg. 121
- Potometer
- Leafy twigs
- Electric heater
- Stopwatch
- Spotlight Biology Learner's Book Grade 10 pg. 122
- Fan
- Polythene bags
- Spotlight Biology Learner's Book Grade 10 pg. 124
- Leaves of different plants
- Hand lens
- Spotlight Biology Learner's Book Grade 10 pg. 126
- Animations
- Charts
- Digital resources
- Spotlight Biology Learner's Book Grade 10 pg. 127
- Woody plant
- Knife/scalpel
- Protective clothing
- Spotlight Biology Learner's Book Grade 10 pg. 128
- Reference books

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

Anatomy and Physiology of Plants

Gaseous Exchange - Meaning of gaseous exchange
Gaseous Exchange - Stomata as gaseous exchange sites
Gaseous Exchange - Lenticels and pneumatophores

By the end of the lesson, the learner should be able to:

- Define gaseous exchange
- Explain the significance of gaseous exchange to plants
- Connect gaseous exchange to how plants provide oxygen for all breathing organisms

In groups, learners are guided to:
- Search for information on meaning of gaseous exchange
- Discuss the concentration gradient that aids gaseous exchange
- Share findings with classmates for peer assessment

What is gaseous exchange and why is it important to plants?

- Spotlight Biology Learner's Book Grade 10 pg. 132
- Charts
- Reference books
- Digital resources
- Spotlight Biology Learner's Book Grade 10 pg. 134
- Clear nail varnish
- Leaves
- Microscope
- Slides
- Spotlight Biology Learner's Book Grade 10 pg. 135
- Pictures of lenticels and pneumatophores
- Woody stem specimens
- Charts

- Oral questions - Written assignments - Observation

Anatomy and Physiology of Plants

Gaseous Exchange - Adaptations in aquatic plants
Gaseous Exchange - Adaptations in terrestrial plants
Gaseous Exchange - Structure of stomata and guard cells
Gaseous Exchange - Mechanism of stomatal opening and closing

By the end of the lesson, the learner should be able to:

- Describe adaptations of gaseous exchange sites in aquatic plants
- Explain how hydrophytes exchange gases in water environments
- Relate these adaptations to how water lilies and lotus plants float and breathe

In groups, learners are guided to:
- Study diagrams of transverse sections of water lily leaves
- Discuss adaptations like stomata on upper surface and aerenchyma tissue
- Observe permanent slides of hydrophyte leaves

How are aquatic plants adapted for gaseous exchange?

- Spotlight Biology Learner's Book Grade 10 pg. 136
- Permanent slides
- Microscope
- Charts
- Digital resources
- Spotlight Biology Learner's Book Grade 10 pg. 137
- Pictures of xerophytes and mesophytes
- Spotlight Biology Learner's Book Grade 10 pg. 138
- Charts showing stomata structure
- Prepared slides
- Spotlight Biology Learner's Book Grade 10 pg. 139
- Animations

- Oral questions - Written tests - Observation

Anatomy and Physiology of Plants

Gaseous Exchange - Theories explaining stomatal movement
Gaseous Exchange and Respiration - Introduction to respiration
Gaseous Exchange and Respiration - Investigating aerobic respiration

By the end of the lesson, the learner should be able to:

- Describe theories explaining stomatal opening and closing
- Compare photosynthetic theory, starch-sugar interconversion theory and potassium ion theory
- Understand how scientific theories help explain complex biological processes

In groups, learners are guided to:
- Watch animations showing different theories of stomatal movement
- Discuss each theory and its explanation of stomatal mechanism
- Write essays comparing the different theories

What theories explain how stomata open and close?

- Spotlight Biology Learner's Book Grade 10 pg. 140
- Animations
- Reference books
- Digital resources
- Spotlight Biology Learner's Book Grade 10 pg. 142
- Charts
- Spotlight Biology Learner's Book Grade 10 pg. 143
- Yeast suspension
- Glucose solution
- Lime water
- Boiling tubes

- Written assignments - Oral questions - 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 - Stages of aerobic respiration
Gaseous Exchange and Respiration - Investigating anaerobic respiration
Gaseous Exchange and Respiration - Applications in food and beverage industry
Gaseous Exchange and Respiration - Applications in agriculture and biofuel
Gaseous Exchange and Respiration - Importance to plants and environment
Structure of mouthparts of insects
Structure of mouthparts - Biting and chewing mouthparts

By the end of the lesson, the learner should be able to:

- Describe the stages of aerobic respiration (glycolysis and Krebs cycle)
- Explain where each stage occurs in the cell
- Relate ATP production to how cells obtain energy currency for their activities

- Explain economic importance of anaerobic respiration in agriculture and biofuel production
- Describe production of silage, biogas and liquid manure
- Relate fermentation to sustainable farming practices and renewable energy production

In groups, learners are guided to:
- Search for information on glycolysis and Krebs cycle
- Discuss how glucose is broken down to pyruvic acid in cytoplasm
- Explain reactions in mitochondria that produce most ATP
- Discuss how anaerobic bacteria produce biogas from organic waste
- Explain production of silage for animal feeds
- Plan projects on fermentation using locally available materials

What are the main stages of aerobic respiration?
How is anaerobic respiration applied in agriculture and biofuel production?

- Spotlight Biology Learner's Book Grade 10 pg. 145
- Charts
- Reference books
- Digital resources
- Spotlight Biology Learner's Book Grade 10 pg. 146
- Yeast suspension
- Glucose solution
- Oil
- Lime water
- Spotlight Biology Learner's Book Grade 10 pg. 147
- Pictures of fermentation products
- Spotlight Biology Learner's Book Grade 10 pg. 148
- Pictures of biogas plants
- Reference books
- Digital resources
- Charts
- Spotlight Biology Grade 10 pg. 153
- Protective clothing
- Collection jars
- Hand lens
- Pair of forceps
- Spotlight Biology Grade 10 pg. 154
- Charts showing mouthparts
- Photomicrographs

- Written tests - Oral questions - Observation
- Written tests - Project assessment - Oral questions

Anatomy and Physiology of Animals

Structure of mouthparts - Piercing and sucking mouthparts (Tsetse fly)
Structure of mouthparts - Piercing and sucking mouthparts (Mosquito)
Structure of mouthparts - Siphoning mouthparts (Butterfly/Moth)
Adaptations of mouthparts to feeding modes
Illustrating mouthparts in different insects
Observing different birds and their feeding habits

By the end of the lesson, the learner should be able to:

- Describe the structure of piercing and sucking mouthparts in tsetse flies
- Illustrate the mouthparts of a tsetse fly
- Connect the study of tsetse fly mouthparts to disease transmission and public health

In groups, learners are guided to:

- Search for information on mouthparts of tsetse fly from print and non-print resources
- Watch animations/videos on tsetse fly mouthparts
- Draw and label mouthparts including labium, labrum, mandibles, maxillae and hypopharynx

How are tsetse fly mouthparts adapted for piercing and sucking?

- Spotlight Biology Grade 10 pg. 156
- Digital devices
- Videos/animations
- Charts
- Spotlight Biology Grade 10 pg. 157
- Charts
- Photomicrographs
- Digital resources
- Digital devices
- Digital resources
- Reference books
- Spotlight Biology Grade 10 pg. 158
- Drawing materials
- Coloured pencils
- Spotlight Biology Grade 10 pg. 159
- Binoculars
- Digital camera
- Protective clothing
- Writing materials

- Oral questions - Labelled drawings - Written tests

Anatomy and Physiology of Animals

Structure of beaks - Grain/seed eaters and nectar feeders
Structure of beaks - Fish eaters, flesh eaters and filter feeders
Structure of beaks - Multipurpose feeders, woodchippers, insect and fruit eaters
Importance of diversity in feeding modes of insects and birds

By the end of the lesson, the learner should be able to:

- Describe the structure of beaks of grain/seed eaters and nectar feeders
- Relate beak structure to feeding habits
- Connect bird beak diversity to food security through seed dispersal

In groups, learners are guided to:

- Study pictures of beaks of sparrows, parrots, hummingbirds and sunbirds
- Discuss how beaks are adapted to feeding modes
- Draw and label beaks of grain eaters and nectar feeders

How are beaks of grain eaters and nectar feeders adapted to their diets?

- Spotlight Biology Grade 10 pg. 160
- Charts
- Photographs
- Digital resources
- Spotlight Biology Grade 10 pg. 161
- Spotlight Biology Grade 10 pg. 162
- Spotlight Biology Grade 10 pg. 164
- Flash cards
- Manila papers
- Marker pens

- Oral questions - Labelled drawings - Written assignments

Anatomy and Physiology of Animals

Meaning and importance of transport systems in animals
Transport system in insects
Transport system in fish

By the end of the lesson, the learner should be able to:

- Explain the meaning of transport in animals
- Describe the importance of transport systems in animals
- Connect transport system functions to maintaining good health through exercise and nutrition

In groups, learners are guided to:

- Search for information on meaning and importance of transport systems in animals
- Discuss how transport systems deliver nutrients, remove wastes, fight infections and regulate body temperature
- Write short notes on importance of transport

What is transport and why is it important in animals?

- Spotlight Biology Grade 10 pg. 166
- Digital devices
- Reference books
- Charts
- Spotlight Biology Grade 10 pg. 167
- Charts
- Digital resources
- Drawing materials
- Animations/videos
- Digital devices

- Oral questions - Written assignments - Group discussions

Anatomy and Physiology of Animals

Transport system in amphibians
Transport system in reptiles and mammals
Open and closed circulatory systems
Single and double circulatory systems
External structure of the mammalian heart
Internal structure of the mammalian heart

By the end of the lesson, the learner should be able to:

- Describe the structure of transport system in amphibians
- Illustrate the three-chambered heart in amphibians
- Relate amphibian circulation to wetland conservation and biodiversity

- Differentiate between single and double circulatory systems
- Illustrate single and double circulatory systems
- Connect efficient circulation to high energy demands in active animals like birds and mammals

In groups, learners are guided to:

- Discuss the closed circulatory system in amphibians
- Study the structure of the three-chambered heart
- Draw and label the circulatory system in amphibians

- Use charts to identify single and double circulatory systems
- Discuss blood flow in single circulation (fish) versus double circulation (mammals)
- Draw well-labelled diagrams of both systems

Why do amphibians have a three-chambered heart?
How do single and double circulatory systems differ in efficiency?

- Spotlight Biology Grade 10 pg. 167
- Charts
- Digital resources
- Reference books
- Drawing materials
- Spotlight Biology Grade 10 pg. 168
- Spotlight Biology Grade 10 pg. 170
- Charts
- Digital resources
- Drawing materials
- Spotlight Biology Grade 10 pg. 171
- Heart models
- Digital resources
- Spotlight Biology Grade 10 pg. 172

- Labelled diagrams - Oral questions - Peer assessment
- Labelled diagrams - Written tests - Peer assessment

Anatomy and Physiology of Animals

Cardiac cycle - Diastole
Cardiac cycle - Systole
Control of heartbeat - SAN, AVN and Purkinje tissue

By the end of the lesson, the learner should be able to:

- Explain the meaning of cardiac cycle
- Describe the events during diastole (relaxation phase)
- Relate resting heart rate to fitness levels and overall health

In groups, learners are guided to:

- Study diagrams showing the heart during diastole
- Discuss blood flow into relaxed ventricles
- Explain the role of bicuspid and tricuspid valves during diastole

What happens during the relaxation phase of the cardiac cycle?

- Spotlight Biology Grade 10 pg. 173
- Charts
- Animations/videos
- Digital devices
- Spotlight Biology Grade 10 pg. 174

- Oral questions - Written assignments - Group discussions

Anatomy and Physiology of Animals

Dissection of mammalian circulatory system
Human circulatory system - Major blood vessels
Structure of the human lymphatic system

By the end of the lesson, the learner should be able to:

- Identify parts of the circulatory system through dissection
- Observe and draw the transport structures in a small mammal
- Apply dissection skills to careers in veterinary medicine and biological research

In groups, learners are guided to:

- Dissect a small mammal (rat or rabbit) to observe circulatory structures
- Identify liver, lungs, heart, kidneys and major blood vessels
- Draw a simple diagram showing position of organs and blood vessels

How can we observe the circulatory system in a mammal?

- Spotlight Biology Grade 10 pg. 175
- Small mammal specimen
- Dissecting kit
- Dissecting board
- Spotlight Biology Grade 10 pg. 176
- Charts
- Digital resources
- Drawing materials

- Practical assessment - Labelled drawings - Observation

Anatomy and Physiology of Animals

Structure of the immune system
Immune response - Antigens and antibodies
Types of white blood cells and phagocytosis

By the end of the lesson, the learner should be able to:

- Identify the components of the immune system
- Describe the organs and tissues that make up the immune system
- Connect immune system knowledge to personal hygiene and disease prevention practices

In groups, learners are guided to:

- Use charts to discuss the immune system components
- Identify white blood cells, lymph nodes, spleen, thymus, tonsils and bone marrow
- Draw a diagram representing the immune system

What are the components of the immune system?

- Spotlight Biology Grade 10 pg. 178
- Charts
- Digital resources
- Reference books
- Spotlight Biology Grade 10 pg. 179
- Photomicrographs
- Digital resources

- Oral questions - Labelled diagrams - Group discussions

Anatomy and Physiology of Animals

Types of immunity - Innate and acquired immunity
Types of immunity - Natural and artificial acquired immunity
Process of blood clotting
Blood groups and antigens
Blood group compatibility and transfusion
Rhesus factor and its significance

By the end of the lesson, the learner should be able to:

- Differentiate between innate and acquired immunity
- Give examples of innate immunity barriers
- Relate natural immunity barriers to hygiene practices like handwashing and skin care

- Identify the ABO blood groups in humans
- Explain the role of antigens in determining blood groups
- Relate blood group knowledge to importance of knowing one's blood type for emergencies

In groups, learners are guided to:

- Read reference materials on types of immunity
- Discuss innate immunity including skin, stomach acid, enzymes in tears and cough reflex
- Write short notes on innate immunity

- Search for information on ABO blood grouping system
- Discuss antigens A and B and their presence in different blood groups
- Complete a table showing blood groups and antigens present

What is the difference between innate and acquired immunity?
What determines a person's blood group?

- Spotlight Biology Grade 10 pg. 180
- Charts
- Digital resources
- Reference books
- Spotlight Biology Grade 10 pg. 181
- Animations/videos
- Digital devices
- Spotlight Biology Grade 10 pg. 183
- Charts
- Digital resources
- Reference books
- Spotlight Biology Grade 10 pg. 184
- Manila papers
- Marker pens
- Spotlight Biology Grade 10 pg. 186
- Resource person

- Oral questions - Written tests - Group discussions
- Oral questions - Table completion - Written assignments

Anatomy and Physiology of Animals

Importance of diversity of transport systems in animals
Characteristics of respiratory surfaces in animals
Tracheal system - Spiracles and trachea

By the end of the lesson, the learner should be able to:

- Explain the importance of diversity of transport systems in animals
- Relate transport system complexity to habitat and energy needs
- Connect transport system diversity to biodiversity conservation and ecological balance

In groups, learners are guided to:

- Discuss why different animals have different transport systems
- Relate transport system efficiency to oxygen delivery and metabolic needs
- Design posters on importance of diversity of transport systems

Why do different animals have different transport systems?

- Spotlight Biology Grade 10 pg. 187
- Manila papers
- Marker pens
- Digital resources
- Spotlight Biology Grade 10 pg. 189
- Charts
- Digital resources
- Reference books
- Spotlight Biology Grade 10 pg. 190
- Insect specimens
- Hand lens
- Protective clothing

- Poster presentations - Oral questions - Written tests

Anatomy and Physiology of Animals

Tracheal system - Tracheoles and adaptations
Respiratory siphons and tracheal gills in aquatic insects
Structure of fish gills
Adaptations of fish gills for gaseous exchange

By the end of the lesson, the learner should be able to:

- Describe the structure and adaptations of tracheoles
- Explain how the tracheal system is adapted for gaseous exchange
- Relate insect respiratory efficiency to their survival in diverse environments

In groups, learners are guided to:

- Study diagrams showing tracheoles and their connections to body cells
- Discuss adaptations including moist surface, thin walls and numerous branches
- Draw and label complete tracheal system

How are tracheoles adapted for gaseous exchange in insects?

- Spotlight Biology Grade 10 pg. 191
- Charts
- Photomicrographs
- Digital resources
- Photographs
- Spotlight Biology Grade 10 pg. 192
- Fresh fish specimen
- Dissecting kit
- Hand lens
- Spotlight Biology Grade 10 pg. 193
- Animations/videos
- Digital devices

- Labelled diagrams - Oral questions - Written tests

Anatomy and Physiology of Animals

Respiratory surfaces in amphibians - Skin, buccal cavity and lungs
Respiratory system in birds - Lungs and air sacs
Structure of mammalian lungs and alveoli

By the end of the lesson, the learner should be able to:

- Describe the respiratory surfaces in amphibians
- Explain adaptations of skin, buccal cavity and lungs for gaseous exchange
- Relate amphibian respiratory adaptations to wetland habitat conservation

In groups, learners are guided to:

- Read reference materials on respiratory structures in amphibians
- Discuss how frogs and toads use skin, mouth cavity and lungs for gaseous exchange
- Draw and label respiratory surfaces in amphibians

Why do amphibians have multiple respiratory surfaces?

- Spotlight Biology Grade 10 pg. 194
- Charts
- Digital resources
- Reference books
- Spotlight Biology Grade 10 pg. 196
- Animations/videos
- Digital devices
- Spotlight Biology Grade 10 pg. 197
- Small mammal specimen
- Dissecting kit
- Charts

- Oral questions - Labelled diagrams - Written assignments

Anatomy and Physiology of Animals

Adaptations of alveoli for gaseous exchange
Gaseous exchange at the alveoli
Transport of oxygen - Oxyhaemoglobin formation
Breathing mechanism - Inhalation
Breathing mechanism - Exhalation
Aerobic respiration - Glycolysis and Krebs cycle

By the end of the lesson, the learner should be able to:

- Explain the adaptations of alveoli for gaseous exchange
- Describe the features that make alveoli efficient respiratory surfaces
- Connect lung health to respiratory diseases prevention and regular exercise

- Describe the events that occur during inhalation
- Explain the role of intercostal muscles and diaphragm in inhalation
- Connect breathing mechanics to breathing exercises for relaxation and stress management

In groups, learners are guided to:

- Study diagrams showing alveolar structure
- Discuss adaptations including thin epithelium, moist lining, large surface area and rich blood supply
- Draw and label the structure of alveoli

- Make a model to demonstrate inhalation using a plastic bottle, balloons and straws
- Discuss contraction of external intercostal muscles and flattening of diaphragm
- Explain how volume increases and pressure decreases during inhalation

How are alveoli adapted for efficient gaseous exchange?
What happens during inhalation?

- Spotlight Biology Grade 10 pg. 198
- Charts
- Photomicrographs
- Digital resources
- Spotlight Biology Grade 10 pg. 199
- Animations/videos
- Digital devices
- Spotlight Biology Grade 10 pg. 200
- Digital resources
- Reference books
- Spotlight Biology Grade 10 pg. 201
- Plastic bottles
- Balloons
- Straws
- Charts
- Spotlight Biology Grade 10 pg. 203
- Breathing model
- Charts
- Digital resources
- Spotlight Biology Grade 10 pg. 204
- Small animal specimen
- Lime water
- Delivery tubes
- Bottles

- Labelled diagrams - Oral questions - Written assignments
- Model construction - Oral questions - Demonstrations

Anatomy and Physiology of Animals

Anaerobic respiration in animal muscles
Oxygen debt and its repayment
Respiratory substrates and respiratory quotient calculation
Factors affecting energy requirements in humans
Significance of gaseous exchange and respiration in animals

By the end of the lesson, the learner should be able to:

- Describe the process of anaerobic respiration in animals
- Explain the production of lactic acid during intense exercise
- Connect anaerobic respiration to muscle fatigue during sports and exercise recovery

In groups, learners are guided to:

- Carry out an activity to investigate anaerobic respiration by measuring breathing rate before and after running
- Discuss how lactic acid causes muscle fatigue and cramps
- Write the equation for anaerobic respiration in animals

Why do muscles feel tired after intense exercise?

- Spotlight Biology Grade 10 pg. 205
- Stopwatch
- Open field
- Writing materials
- Spotlight Biology Grade 10 pg. 206
- Charts
- Digital resources
- Reference books
- Calculators
- Spotlight Biology Grade 10 pg. 208
- Spotlight Biology Grade 10 pg. 210
- Resource person
- Digital resources

- Practical activity - Oral questions - Written tests