Second Term Examination Biology SS 1 Exam Questions

BIOLOGY (SS 1)

SECOND TERM EXAMINATION 

SENIOR SECONDARY SCHOOLS

SECTION A – THEORY 

INSTRUCTION – Answer all the questions in this section. 

1. The ecosystem is made up of _______ main components.

(a) 3

(b) 2

(c) 4

(d) 5

2. These are ecological concepts except _______.

(a) environment

(b) hydrosphere

(c) ecological niche

(d) autecology

3. The word “Oikos” means _______.

(a) home

(b) desert

(c) water

(d) air

4. _______ are organisms, mainly animals which cannot manufacture their own food but depend directly or indirectly on plants for their food.

(a) Autotrophs

(b) Heterotrophs

(c) Decomposers

(d) Scavengers

5. _______ is the study of animals.

(a) Zoology

(b) Botany

(c) Ecology

(d) Anatomy

6. _______ is the liquid or aquatic portion of the earth.

(a) Hydrosphere

(b) Lithosphere

(c) Environment

(d) Biome

7. Animals that feed on both plants and animals are called _______.

(a) Carnivorous

(b) Herbivorous

(c) Omnivorous

(d) Scavengers

8. Water is composed of two elements _______ and _______.

(a) Oxygen and Nitrogen

(b) Hydrogen and Oxygen

(c) Hydrogen and Carbon

(d) Hydrogen and Chlorine

9. All are sources of noise pollution except _______.

(a) aeroplane/aviation noise

(b) car horn and sirens

(c) noise from generators

(d) noise from boiling kettle

10. _______ is the study of an individual organism and its environment.

(a) Autecology

(b) Synecology

(c) Ecology

(d) Biology

11. _______ group of organisms feeds directly on green plants.

(a) Primary consumer

(b) Secondary consumer

(c) Producer

(d) Decomposer

12. A constituent of the exhaust gases of motor vehicle which causes serious air pollution is _______.

(a) Carbon monoxide

(b) Oxygen

(c) Ozone

(d) Carbon dioxide

13. When large numbers of organisms share limited space and resources the result is _______.

(a) Competition

(b) Symbiosis

(c) Immigration

(d) Commensalism

14. _______ is the liquid portion of the earth.

(a) Hydrosphere

(b) Lithosphere

(c) Biosphere

(d) Atmosphere

15. _______ are the heterotrophs which cannot manufacture their own food but depend on plants for their own food.

(a) Decomposers

(b) Consumers

(c) Producers

(d) Abiotic

16. ______ is a relationship between two organisms which the commensal      benefits while the other called the host neither benefitted nor harm.

(a) Parasitism

(b) Commensalism

(c) Symbiosis

(d) Predation

17. _____ is the range between the minimum and maximum limits to which living organisms can withstand and survive certain changes in their environment.

(a) Tolerance Range

(b) Adaptation

(c) Adaptation range

(d) None of the above

18. The harmful substances that cause pollution in the environment are called _______.

(a) Pollutants

(b) Corrosive

(c) Irritation

(d) Toxic

19. There are _______ main types of pollution.

(a) 4

(b) 3

(c) 5

(d) 2

20. There are _______ types of pollution.

(a) 4

(b) 3

(c) 2

(d) 5

SECTION B – THEORY

INSTRUCTION – Answer only four questions. 

QUESTION 1

A. What is Ecology?

B. Write explanatory notes on the following terms:

(i) Hydrosphere

(ii) Habitat

(iii) Atmosphere

(iv) Environment

QUESTION 2

A. Define pollution.

B. State the types of pollution and give two examples each.

C. List three effects of water pollution on living organisms.

QUESTION 3

A. State the first law of thermodynamics.

B. Give two examples of a food chain in a terrestrial habitat. Illustrate with the arrow.

C. What are Autotrophs?

QUESTION 4

A. Define population?

B. State five factors affecting population

C. Define Commensalism?

QUESTION 5

A. What is food chain?

B. State four differences between food chain and a food Web.