Scheme of Work Biology SS1 3rd term

WEEK

CONTENT

1

Revision of last terms work, Resumption test, copying of scheme of work

2

(a) Population studies by sampling method: Population sizes dominance, density, factors that affect population

(b) Ecological factor; agnatic, terrestrial and factors common to all habitats

3

(a) Relationship between soil types and water holding effect of soil on vegetation

(b) Simple measurement of ecological factors

(c) Measuring instruments

4.

Autotrophy and Heterotrophy

1. producers (autotrophs)

i. consumers (heterotrophs)

ii. Aquatic and terrestrial examples of producers and consumers

(b) Tropical levels

1. food chain

ii. food web non cycle nature of chemical energy transfer Nutrient movement

5.

Energy loss in the ecosystem

1. Solar radiation

ii. Energy loss in the biosphere

iii. measures of primary protection

(b) Laws of thermodynamics

- First and second law.

Application of both laws to ecological phenomena

(c) Classification of plants

i. Botanical

ii. Agricultural

iii. Classifications based on life cycle

6

Effects of agricultural activities on ecological system

i. Bush cleaning/ burning

ii. tillage

iii. Fertilization/ herbicide and their effects

iv. effects of different types of farming on ecological system

(b) Pests and diseases of agricultural importance.

i. knowledge of pests (types, life cycles, control)

ii. diseases (types, control)

7

MID TERM TEST AND MID TERM BREAK

8

Food production and storage

i. Ways of improving crop yield

ii. Causes of wastage

iii. Methods of preserving and storing food

(b) Population growth and food supply

(c) Relationship between availability of food and human population

(d) Government efforts to increase food production

9.

Microorganisms in air and water

• Identification of micro-organisms in air, pond water, river, stream
• Microorganisms in our bodies
• Carriers of microorganisms
• Types of microorganisms

(b) Growth of microorganisms

• Beneficial effects
• Harmful effects

(c) Diseases caused by microorganisms

10

Control of harmful microorganisms

- Vectors (1) definition (ii)ways of controlling vectors

- students health: maintenance of good health

(a) importance to community

(b) ways in which communities do these

i. refuse disposal

ii. sewage disposal

iii. protection of water

iv. protection of food

v. control of diseases

vi. Health organizations

11-13

Revision and Examinations