CLASSIFICATION II

Introduction and Principles of Classification

By the end of the lesson, the learner should be able to:
Explain the importance of classification of organisms. Discuss the general principles of classification. Identify features used to classify organisms. Define taxa and taxon.

Q/A: Review of Classification I concepts. Discussion of classification criteria - structural similarities and differences. Q/A: Features for animals (body symmetry, coelom, appendages) and plants (vascular system, reproductive structures).

Charts - Classification features, Taxonomic units

Certificate Biology Form 3, Pages 1-2

CLASSIFICATION II

Binomial System of Nomenclature
Hierarchy of Taxa
Five Kingdom System

By the end of the lesson, the learner should be able to:
Define species and explain binomial nomenclature. Explain the rules of binomial naming system. Give examples of scientific names. State advantages of binomial nomenclature.

Detailed explanation of binomial system with two names (genus and species). Practice writing scientific names correctly - italics, capitalization rules. Q/A: Examples from Table 1.1 - human, chimpanzee, plants.

Charts - Examples of scientific names (Table 1.1), Practice writing materials
Charts - Taxonomic pyramid (Fig 1.1), Wall charts showing hierarchy
Charts - Table 1.2 characteristics, Five kingdom comparison chart

Certificate Biology Form 3, Pages 2-3

CLASSIFICATION II

Kingdom Monera - Introduction
Bacteria - Structure and Characteristics
Bacterial Types and Shapes

By the end of the lesson, the learner should be able to:
State characteristics of Kingdom Monera. Define prokaryotic organisms. Give examples of Monera. Distinguish prokaryotes from eukaryotes.

Detailed discussion of Monera characteristics - unicellular, prokaryotic, no organelles. Exposition of bacteria and blue-green algae as examples. Q/A: Differences between prokaryotes and eukaryotes.

Charts - Prokaryote vs eukaryote comparison, Microscope images
Charts - Fig 1.2 bacterial structure, Drawing materials, Microscope
Charts - Fig 1.3 bacterial types, Microscope, Prepared bacterial slides

Certificate Biology Form 3, Page 5

CLASSIFICATION II

Bacterial Reproduction and Economic Importance
Blue-green Algae

By the end of the lesson, the learner should be able to:
Describe bacterial reproduction by binary fission. Explain economic importance of bacteria. Identify harmful and useful bacteria. Give examples of bacterial diseases.

Exposition of asexual reproduction by binary fission. Discussion of harmful bacteria - diseases (tuberculosis, typhoid, cholera). Q/A: Useful bacteria - decomposition, nitrogen fixation, antibiotics.

Charts - Binary fission diagram, Disease-causing bacteria table, Specimens of antibiotics
Charts - Fig 1.4 Anabaena, Microscope, Water samples from local sources

Certificate Biology Form 3, Pages 6-7

CLASSIFICATION II

Kingdom Protoctista - Introduction
Protozoa (Protista)
Algae - Characteristics and Types

By the end of the lesson, the learner should be able to:
State characteristics of Kingdom Protoctista. Identify the two sub-kingdoms. Give examples of protoctists. Distinguish from other kingdoms.
Describe characteristics of protozoa. Give examples of protozoa. Identify disease-causing protozoa. Examine protozoa practically.

Teacher exposition of Protoctista characteristics - eukaryotic, mostly unicellular. Discussion of two sub-kingdoms: Protozoa and Algae. Examples from Table 1.3.
Study of unicellular protozoans using Fig 1.5. Practical examination of pond water under microscope. Students observe and draw Paramecium, Euglena, Amoeba. Q/A: Disease-causing protozoans and their vectors.

Charts - Protoctista characteristics, Table 1.3 examples
Charts - Fig 1.5 protozoa, Table 1.3 diseases, Microscopes, Pond water samples, Glass slides, Drawing materials
Charts - Fig 1.6 algae types, Specimens of different algae, Hand lenses

Certificate Biology Form 3, Page 8
Certificate Biology Form 3, Pages 8-9, 28

CLASSIFICATION II

Economic Importance of Algae

By the end of the lesson, the learner should be able to:
Explain ecological importance of algae. State economic uses of algae. Describe role as primary producers.

Discussion of algae as primary producers in aquatic ecosystems. Q/A: Food source for aquatic animals, oxygen production. Economic uses in food industry, cosmetics.

Charts - Aquatic food chains, Algae products, Ecosystem diagrams

Certificate Biology Form 3, Pages 10-11

CLASSIFICATION II

Kingdom Mycota (Fungi) - Introduction
Fungal Structure and Reproduction

By the end of the lesson, the learner should be able to:
State characteristics of Kingdom Fungi. Give examples of fungi. Describe fungal cell structure. Explain mode of nutrition.

Teacher exposition of fungal characteristics - eukaryotic, cell walls with chitin, heterotrophic. Examples: mushrooms, yeasts, moulds. Discussion of mycelium and hyphae structure.

Charts - Fungal characteristics, Specimens of mushrooms, bread moulds
Charts - Fig 1.7 fungi, Microscopes, Bread mould specimens, Forceps, Glass slides, Drawing materials

Certificate Biology Form 3, Page 11

CLASSIFICATION II

Economic Importance of Fungi

By the end of the lesson, the learner should be able to:
Explain harmful effects of fungi. Describe useful roles of fungi. Give examples of fungal diseases. State uses in industry.

Discussion of harmful fungi - plant diseases (wheat rust), human diseases (thrush, ringworm), food spoilage. Q/A: Useful fungi - decomposers, food production, medicines, brewing.

Charts - Fungal diseases, Specimens of useful fungi, Food products made using fungi

Certificate Biology Form 3, Pages 12-13

CLASSIFICATION II

Kingdom Plantae - Introduction
Plant Phyla Overview
Phylum Bryophyta - Mosses and Liverworts

By the end of the lesson, the learner should be able to:
State characteristics of Kingdom Plantae. Give examples of plants. Describe plant cell features. Explain autotrophic nutrition.
Identify major plant phyla. Compare different plant groups. State examples of each phylum.

Teacher exposition of plant characteristics - multicellular, eukaryotic, chloroplasts, cellulose cell walls, autotrophic. Discussion of shoot and root systems, vascular tissue.
Study of Table 1.4 - Bryophyta, Pteridophyta, Spermatophyta. Discussion of evolutionary progression from simple to complex plants. Examples of each group.

Charts - Plant characteristics, Live plant specimens, Plant cell diagrams
Charts - Table 1.4 plant phyla, Specimens of mosses, ferns, flowering plants
Charts - Fig 1.8 moss, Fig 1.9 liverworts, Live moss specimens, Hand lenses, Drawing materials

Certificate Biology Form 3, Page 13
Certificate Biology Form 3, Pages 13-14

CLASSIFICATION II

Phylum Pteridophyta - Ferns

By the end of the lesson, the learner should be able to:
State characteristics of pteridophytes. Describe fern structure. Explain fern life cycle. Examine fern specimens and spores.

Discussion of fern characteristics using Fig 1.10. Practical examination of complete fern plant - fronds, rhizome, sori. Students collect spores and draw fern structures. Compare with bryophytes.

Charts - Fig 1.10 fern structure, Complete fern specimens, White paper, Hand lenses, Drawing materials

Certificate Biology Form 3, Pages 15-16, 30-31

CLASSIFICATION II

Phylum Spermatophyta - Introduction
Angiosperms - Characteristics

By the end of the lesson, the learner should be able to:
State characteristics of seed plants. Distinguish gymnosperms and angiosperms. Give examples of each group. Explain advantages of seeds.

Discussion of seed-bearing plants using Fig 1.11. Comparison of gymnosperms (naked seeds in cones) vs angiosperms (seeds in fruits). Examples and advantages of seed reproduction.

Charts - Fig 1.11 gymnosperms, Cone specimens, Seeds, Fruits
Flower specimens, Fruits with seeds, Hand lenses, Magnifying glasses

Certificate Biology Form 3, Pages 16-17

CLASSIFICATION II

Classes of Angiosperms

By the end of the lesson, the learner should be able to:
Distinguish monocotyledons and dicotyledons. Compare structural features. Give examples of each class. Examine monocot and dicot specimens.

Detailed study of Table 1.5 comparing monocots and dicots. Practical examination of specimens - leaf venation, root systems, floral parts. Students draw comparative structures.

Charts - Table 1.5, Fig 1.12 structures, Monocot and dicot specimens, Hand lenses, Drawing materials

Certificate Biology Form 3, Pages 17-18

CLASSIFICATION II

Kingdom Animalia - Introduction
Animal Classification Features
Phylum Arthropoda - Characteristics

By the end of the lesson, the learner should be able to:
State characteristics of Kingdom Animalia. Give examples of animals. Explain heterotrophic nutrition. Describe animal adaptations.
Identify features used to classify animals. Explain body symmetry types. Describe skeleton types. State other classification criteria.

Teacher exposition of animal characteristics - multicellular, no cell walls, heterotrophic, mobile, bilateral/radial symmetry. Discussion of adaptations for movement, feeding, response.
Discussion of classification features - body symmetry, segmentation, appendages, skeleton types, body cavities. Examples of bilateral vs radial symmetry, endoskeleton vs exoskeleton.

Charts - Animal characteristics, Various animal specimens/pictures
Charts - Body symmetry diagrams, Skeleton types, Animal classification features
Charts - Arthropod characteristics, Specimens of insects, spiders, crabs

Certificate Biology Form 3, Page 18
Certificate Biology Form 3, Pages 18-19

CLASSIFICATION II

Classes of Arthropoda

By the end of the lesson, the learner should be able to:
Classify arthropods into classes. Compare different arthropod classes. Give examples of each class. Examine arthropod specimens.

Study of five arthropod classes using Figs 1.13-1.16. Practical examination of preserved specimens - identify key features, body segments, appendages. Students draw and label structures.

Charts - Figs 1.13-1.16, Preserved arthropod specimens, Hand lenses, Forceps, Drawing materials

Certificate Biology Form 3, Pages 20-22

CLASSIFICATION II

Phylum Chordata - Characteristics
Classes of Chordates

By the end of the lesson, the learner should be able to:
State characteristics of chordates. Give examples of chordates. Describe vertebral column. Explain chordate features.

Discussion of chordate characteristics - vertebral column, brain in skull, closed circulation, endoskeleton, bilateral symmetry. Study of Table 1.6 showing chordate classes.

Charts - Chordate characteristics, Table 1.6, Vertebrate specimens
Charts - Figs 1.16-1.20 chordate classes, Specimens/pictures of vertebrates

Certificate Biology Form 3, Pages 22-23

CLASSIFICATION II

Dichotomous Keys - Introduction

By the end of the lesson, the learner should be able to:
Explain the purpose of identification keys. Define dichotomous key. Understand key construction principles. Study examples of keys.

Teacher exposition of identification keys using Fig 1.21 diagrammatic key. Discussion of dichotomous pattern - contrasting characteristics. Q/A: Why keys are important for organism identification.

Charts - Fig 1.21 arthropod key, Examples of identification keys

Certificate Biology Form 3, Pages 27-28

CLASSIFICATION II
CLASSIFICATION II
ECOLOGY

Construction of Dichotomous Keys
Using Identification Keys
Nitrogen Cycle

By the end of the lesson, the learner should be able to:
Construct simple dichotomous keys. Practice key construction rules. Use observable features for key making. Create keys for given specimens.
Use dichotomous keys to identify organisms. Practice with complex keys. Identify chordates using provided keys. Apply keys to unknown specimens.

Students construct numerical keys using leaf specimens from Fig 1.23. Practice with invertebrate specimens. Teacher guidance on using contrasting features systematically.
Practical use of identification keys for chordate specimens. Students work through numerical keys step by step. Practice identifying organisms using keys from practical activities section.

Various leaf specimens, Fig 1.23 leaf types, Invertebrate specimens, Key construction worksheets
Chordate specimens, Provided identification keys, Unknown specimens for practice
Charts - Fig 2.1 nitrogen cycle, Table 2.1 bacterial roles

Certificate Biology Form 3, Pages 28-33
Certificate Biology Form 3, Pages 31-33

ECOLOGY

Trophic Levels and Energy Flow

By the end of the lesson, the learner should be able to:
Define trophic levels and identify different levels. Explain energy flow through ecosystems. Describe energy losses between trophic levels.

Teacher exposition of trophic levels - producers to tertiary consumers. Discussion of unidirectional energy flow and energy losses. Q/A: Reasons for energy loss at each level.

Charts - Trophic level diagrams, Energy flow patterns

Certificate Biology Form 3, Pages 43-45

ECOLOGY

Food Chains
Food Webs

By the end of the lesson, the learner should be able to:
Define food chains and construct examples. Identify energy flow direction in food chains. Give examples from terrestrial and aquatic habitats.

Study of food chain examples from textbook. Construction of terrestrial food chains (grass→impala→leopard). Aquatic food chains (plankton→fish→shark). Practice drawing food chains.

Charts - Food chain examples, Arrows showing energy direction
Charts - Fig 2.4 food web, Complex food web examples

Certificate Biology Form 3, Pages 46-47

ECOLOGY

Ecological Pyramids - Introduction

By the end of the lesson, the learner should be able to:
Define ecological pyramids. Distinguish types of ecological pyramids. Explain pyramid of numbers concept.

Teacher exposition of ecological pyramids as graphical representations. Discussion of pyramid types - numbers, biomass, energy. Study of pyramid of numbers using Fig 2.6.

Charts - Fig 2.6 pyramid of numbers, Different pyramid types

Certificate Biology Form 3, Pages 47-49

ECOLOGY

Pyramid of Numbers and Biomass
Interspecific Relationships - Predation
Parasitism - Types and Adaptations

By the end of the lesson, the learner should be able to:
Construct pyramids of numbers from data. Explain inverted pyramids. Define and construct pyramid of biomass.
Define predator-prey relationships. Describe predator and prey adaptations. Give examples of predation in different habitats.

Practice constructing normal and inverted pyramids of numbers. Discussion of when inverted pyramids occur (parasites, large trees). Study of biomass calculation and pyramid construction.
Detailed discussion of predation as feeding relationship. Study of predator adaptations (speed, senses, hunting strategies). Q/A: Prey defense mechanisms (camouflage, mimicry, protective covering).

Data sets for pyramid construction, Calculators, Graph paper
Charts - Predator-prey examples, Adaptation illustrations
Charts - Parasite examples, Adaptation diagrams, Life cycle illustrations

Certificate Biology Form 3, Pages 47-50
Certificate Biology Form 3, Pages 50-52

ECOLOGY

Saprophytism and Economic Importance

By the end of the lesson, the learner should be able to:
Define saprophytism and role of decomposers. Explain economic importance of saprophytes. Describe harmful effects of saprophytes.

Discussion of saprophytes as decomposers. Economic benefits: recycling, soil fertility, antibiotics, fermentation. Harmful effects: food decay, food poisoning. Q/A: Useful vs harmful saprophytic activities.

Charts - Decomposition process, Examples of useful and harmful saprophytes

Certificate Biology Form 3, Pages 57-60

ECOLOGY

Mutualism and Symbiosis
Commensalism

By the end of the lesson, the learner should be able to:
Define mutualism and symbiosis. Give examples of mutually beneficial relationships. Explain lichens, mycorrhiza, and nitrogen-fixing bacteria.

Study of mutualistic relationships with examples: lichens (algae-fungi), mycorrhiza (fungi-tree roots), nitrogen-fixing bacteria (Rhizobium-legumes). Q/A: Benefits to both partners in each relationship.

Charts - Fig 2.8 lichens, Fig 2.9 root nodules, Symbiotic relationship examples
Charts - Commensalism examples, Epiphyte illustrations

Certificate Biology Form 3, Pages 60-63

ECOLOGY

Population Studies - Introduction

By the end of the lesson, the learner should be able to:
Define population and population density. Explain factors affecting population size. Describe carrying capacity concept.

Teacher exposition of population definitions. Discussion of biological factors: birth rate, death rate, sex ratio. Q/A: Environmental factors affecting population growth.

Charts - Population definitions, Factors affecting population

Certificate Biology Form 3, Pages 60-61

ECOLOGY

Population Estimation Methods - Direct Counting
Capture-Mark-Release-Recapture Method
Quadrat and Transect Methods

By the end of the lesson, the learner should be able to:
Describe direct counting methods. Explain when direct counting is suitable. Practice population estimation calculations.
Explain the capture-recapture method. Apply the capture-recapture formula. Identify sources of error in the method.

Discussion of direct counting for small populations and large slow-moving animals. Examples: tree counting, aerial surveys. Practice with simple population counts and density calculations.
Detailed study of capture-recapture method for mobile animals. Practice using the formula: P = (M × R)/m. Discussion of assumptions and sources of error.

Calculators, Sample area measurements, Population data sets
Calculators, Sample data for calculations, Formula charts
Quadrats (if available), Measuring tapes, Sample area data, Calculators

Certificate Biology Form 3, Pages 61-62

ECOLOGY

Plant Adaptations - Xerophytes

By the end of the lesson, the learner should be able to:
Define xerophytes and their habitat conditions. Describe structural adaptations for water conservation. Explain physiological adaptations of desert plants.

Study of xerophyte adaptations using Fig 2.14. Discussion of modified leaves, water storage, extensive roots, waxy cuticles. Q/A: Stomatal adaptations and reduced transpiration.

Charts - Fig 2.14 xerophyte examples, Cactus specimens (if available)

Certificate Biology Form 3, Pages 64-66

ECOLOGY

Plant Adaptations - Hydrophytes
Plant Adaptations - Halophytes and Mesophytes

By the end of the lesson, the learner should be able to:
Define hydrophytes and aquatic conditions. Describe adaptations to aquatic environments. Explain buoyancy and gaseous exchange adaptations.

Study of hydrophyte adaptations using Fig 2.15. Discussion of aerenchyma tissue, stomatal distribution, reduced xylem. Q/A: Adaptations to low light and oxygen levels in water.

Charts - Fig 2.15 aquatic plants, Water plant specimens (if available)
Charts - Fig 2.16 mangroves, Comparison table of plant types

Certificate Biology Form 3, Pages 66-68

ECOLOGY

Environmental Pollution - Introduction

By the end of the lesson, the learner should be able to:
Define pollution and identify major pollutants. Classify types of environmental pollution. Explain pollution effects on ecosystems.

Teacher exposition of pollution definition and sources. Discussion of air, water, and soil pollution types. Q/A: Human activities causing pollution and ecosystem disruption.

Charts - Pollution types and sources, Environmental damage photos

Certificate Biology Form 3, Pages 70-71

ECOLOGY

Air Pollution and Global Warming
Water Pollution
Soil Pollution and Land Degradation

By the end of the lesson, the learner should be able to:
Identify sources and effects of air pollution. Explain greenhouse effect and global warming. Describe ozone layer depletion.
Identify sources of water pollution. Explain effects on aquatic ecosystems. Describe eutrophication process.

Study of greenhouse effect using Fig 2.18. Discussion of greenhouse gases, acid rain, photochemical smog. Q/A: CFCs and ozone layer destruction, UV radiation effects.
Study of water pollution sources using Fig 2.20. Discussion of domestic waste, industrial effluents, pesticides, oil spills. Q/A: Eutrophication, algal blooms, and oxygen depletion.

Charts - Fig 2.18 greenhouse effect, Air pollution sources diagram
Charts - Fig 2.20 water pollution sources, Eutrophication process diagram
Charts - Fig 2.22 soil conservation methods, Soil erosion examples

Certificate Biology Form 3, Pages 71-75
Certificate Biology Form 3, Pages 75-78

ECOLOGY

Human Diseases and Ecology

By the end of the lesson, the learner should be able to:
Relate environmental conditions to disease occurrence. Describe waterborne diseases. Explain disease transmission and prevention.

Study of cholera, typhoid, amoebic dysentery transmission and prevention. Discussion of poor sanitation as disease cause. Q/A: Hygiene practices and disease control.

Charts - Disease transmission cycles, Prevention methods

Certificate Biology Form 3, Pages 82-84

ECOLOGY

Malaria and Parasitic Diseases
Practical Activities and Field Studies

By the end of the lesson, the learner should be able to:
Describe malaria life cycle and transmission. Explain bilharzia and parasitic worm diseases. Analyze prevention and control measures.

Detailed study of Plasmodium life cycle using Fig 2.24. Discussion of Anopheles mosquito control. Study of Schistosoma and Ascaris adaptations and prevention.

Charts - Fig 2.24 malaria life cycle, Parasite life cycles, Prevention methods
Quadrats, Sweep nets, Measuring tapes, Notebooks, Collection containers, Hand lenses

Certificate Biology Form 3, Pages 84-88

REPRODUCTION IN PLANTS AND ANIMALS

Introduction and Importance of Reproduction
Chromosomes and Genes
Mitosis - Introduction and Stages

By the end of the lesson, the learner should be able to:
Define reproduction and distinguish between asexual and sexual reproduction. Explain the importance of reproduction for species survival. State the role of cell division in reproduction.

Q/A: Review of basic reproduction concepts. Discussion of reproduction as biological process for producing new individuals. Teacher exposition of species survival importance. Q/A: Examples of organisms in danger due to poor reproduction (cheetah).

Charts - Types of reproduction, Examples of reproduction in different organisms
Charts - Chromosome structure, Examples of chromosome numbers in different species
Charts - Fig 3.1 mitosis stages, Models of cell division, Microscope slides of mitosis

Certificate Biology Form 3, Page 99

REPRODUCTION IN PLANTS AND ANIMALS

Mitosis - Differences in Plants and Animals
Meiosis - Introduction and Meiosis I
Meiosis II and Comparison with Mitosis
Introduction to Reproduction
Cell Division - Mitosis

By the end of the lesson, the learner should be able to:
Compare mitosis in plant and animal cells. Explain cytokinesis differences. Describe the significance of mitosis. Examine mitosis in onion root tips practically.
Describe the stages of Meiosis II. Compare and contrast mitosis and meiosis. Explain the significance of meiosis in genetic variation.

Study of plant mitosis using Fig 3.2 - cell wall formation vs. invagination. Discussion of centriole presence in animals only. Practical examination of onion root tips to observe mitosis stages. Students draw and identify stages observed.
Study of Meiosis II using Fig 3.3B: Prophase II, Metaphase II, Anaphase II, Telophase II. Detailed comparison using Table 3.1 - differences in purpose, number of divisions, chromosome behavior, genetic outcomes.

Charts - Fig 3.2 plant mitosis, Microscopes, Onion root tips, Acetocarmine stain, Glass slides, Cover slips
Charts - Fig 3.3A Meiosis I stages, Diagrams of homologous chromosomes, Crossing over illustrations
Charts - Fig 3.3B Meiosis II stages, Table 3.1 comparison chart, Summary diagrams
Charts showing types of reproduction, Textbook, Wall charts
Charts showing mitosis stages, Microscope slides, Drawing materials

Certificate Biology Form 3, Pages 102-103, 108-109
Certificate Biology Form 3, Pages 105-107

REPRODUCTION IN PLANTS AND ANIMALS

Mitosis in Young Root Tip
Meiosis Process
Meiosis in Plant Cells

By the end of the lesson, the learner should be able to:
To observe mitosis in a young root tip. To identify different stages of mitosis under microscope. To draw cells showing stages of mitosis.

Practical work: Observing mitosis in onion root tip. Procedure: Preparation of slides, staining with iodine. Microscopic observation of different stages. Drawing and labeling observed cells. Recording observations.

Onion root tips, Microscope, 1M HCl, Cover slides, Iodine solution, Glass slides
Charts showing meiosis stages, Drawing materials, Textbook
Flower buds, 1M HCl, Heat source, Glass slides, Filter paper, Microscope

Certificate Biology Form 3, Pages 102-103

REPRODUCTION IN PLANTS AND ANIMALS

Asexual Reproduction - Binary Fission
Spore Formation and Budding
Sexual Reproduction in Plants - Flower Structure

By the end of the lesson, the learner should be able to:
To identify types of asexual reproduction. To describe binary fission in amoeba. To explain conditions for binary fission.

Q/A: Types of asexual reproduction. Teacher demonstration: Drawing stages of binary fission. Discussion: Process of binary fission in amoeba. Examination of prepared slides showing binary fission.

Charts showing binary fission, Prepared slides of amoeba, Microscope, Drawing materials
Bread/ugali mould, Microscope, Yeast culture, 10% sugar solution, Methylene blue, Hand lens
Bean flowers, Morning glory, Hibiscus, Hand lens, Scalpels, Drawing materials

Certificate Biology Form 3, Page 113

REPRODUCTION IN PLANTS AND ANIMALS

Pollination - Insect Pollinated Flowers
Wind-Pollinated Flowers and Adaptations

By the end of the lesson, the learner should be able to:
To define pollination. To identify agents of pollination. To describe structure of insect-pollinated flowers. To examine insect-pollinated flowers.

Q/A: Definition and agents of pollination. Practical examination: Structure of insect-pollinated flowers. Identification of adaptive features. Comparison with wind-pollinated flowers. Discussion: Importance of bright colors and nectar.

Insect-pollinated flowers, Hand lens, Measuring rulers, Drawing materials
Wind-pollinated flowers (grass, maize), Hand lens, Charts, Drawing materials

Certificate Biology Form 3, Pages 120-121

REPRODUCTION IN PLANTS AND ANIMALS

Self-Pollination Prevention and Fertilisation
Seed and Fruit Development

By the end of the lesson, the learner should be able to:
To discuss mechanisms preventing self-pollination. To describe fertilisation process in flowering plants. To explain double fertilisation.
To explain seed formation. To describe fruit development. To classify fruits using specific criteria.

Discussion: Methods preventing self-pollination. Teacher exposition: Process of fertilisation. Drawing diagrams showing fertilisation stages. Q/A: Significance of double fertilisation. Discussion: Formation of zygote and endosperm.
Discussion: Process of seed formation from ovule. Explanation of fruit development from ovary. Practical work: Examining variety of fruits. Classification of fruits into types. Recording observations and drawing fruits.

Charts showing fertilisation, Drawing materials, Textbook
Variety of fruits, Petri dishes, Scalpels, Drawing materials, Charts

Certificate Biology Form 3, Pages 121-123
Certificate Biology Form 3, Pages 123-126

REPRODUCTION IN PLANTS AND ANIMALS

Placentation and Internal Fruit Structure
Fruit and Seed Dispersal
Review and Assessment

By the end of the lesson, the learner should be able to:
To define placentation. To identify types of placentation. To label internal structure of fruits. To examine ovaries of various fruits.

Teacher exposition: Types of placentation. Practical examination: Ovaries of beans, sunflower, pawpaw, orange. Drawing diagrams showing placentation types. Vertical sections of fruits showing internal structure.

Fruits (beans, sunflower, pawpaw, orange), Scalpels, Drawing materials
Variety of fruits and seeds, Hand lens, Drawing materials, Collection containers
Past examination papers, Drawing materials, Assessment sheets, Charts for reference

Certificate Biology Form 3, Pages 124-130