1. An example of an organism that exists as a colony is

A. Spirogvra.

B. Paramecium.

C. Euglena.

D. Volvox.


2, Gymnosperms bear naked seeds because they lack

A. ovary.

B. colourful flowers.

G, pollen grains.

D. stigma.


3. DNA formation is associated with

A. Golgi bodies.

B. lysosomes.

C. mitochondria.

D. nucleus.


Plant A was seen to appear as plant B after seven hours.

Study the diagrams carefully and answer questions 4 and 5

4. The term that can be used to describe what happened to plant A after seven hours is

A. wilting.

B. competition.

C. transpiration.

D. osmosis.


5. The environmental factors responsible for the condition in plant B are

A. low humidity and low temperature.

B. high humidity and low temperature.

C. low humidity and high temperature.

D. high humidity and high temperature.


6. Hydra is considered to be at a tissue level of organization of life because it

A. has numerous cells that perform different functions.

B. has developed organs and systems.

C. has a poorly developed nervous system.

D. reproduces by budding.



Study the diagrams below and answer questions 7 and 8.


7. Which of the following statements about the diagrams is correct?

A. They are both organs

B. One of them is an organism

C. They both form part of tissues

D. They are harmful to humans

8. A decrease in the number of II will result in

A.an increase in urine production.

B. an increase in energy production.

C. a decreased population.

D. decreased immunity.


9. Flaccidity in plants is associated with

A. cessation of photosynthesis.

B. wilting.

C. turgidity.

D. discolouration of leaves.


10. Which of the following substances is not usually present in the urine of a healthy person?

A. Urea

B. Mineral salts

C. Glucose

D. Water


11.Muscles act in opposite directions in order to

A.cause a bone to move.

B. prevent dislocation at joints.

C. prevent muscle fatigue.

D. regulate bodily activities.


12. Lateral meristem in flowering plants is found in the

A. cortex.

B. pericycle.

C. cambium.

D. pith.


13.The cells and tissues of the nose, throat, chest diaphragm and lungs form the

A. circulatory system:

B. respiratory system.

C. transport system.

D. digestive system.


14. The exchange of gases between the environment and the respiratory organs of vertebrates is referred to as

A. inhalation.

B. respiration.

C. expiration.

D. breathing.


15. The maintenance of a constant internal environment in an organism is known as

A. homeostasis.

B. homoiothemy.

C. diuresis.

D. dialysis.

16. Which of the following organs is responsible for the production of insulin?

A. Spleen

B. Adrenal gland

C. Thyroid gland

D. Pancreas


17 .Which of the following actions is not a voluntary action?

A. Stealing

B. Sneezing

C. Fighting

D. Cheating


18. In both dicotyledonous and monocotyledonous plants, the root hairs originate from the

A. piliferous layer.

B. epidermal layer.

C. endodermal layer.

D. cortical layer.


19. Which of the following parts of the ear does not contain endolymph?

A.Semi - circular canals

B. Utriculus

C. Tympanum

D. Sacculus


20. The type of placentation illustrated in the diagram below is

A. marginal.

B. parietal.

C. axile.

D. basal.


The steps below are involved in the testing of a leaf for starch.

Study them carefully and answer questions 21 and 22.

I. Decolorize leaf

II. Dip decolorized leaf in warm water

Ill. Place leaf in boiling water

IV. Add iodine solution


21. The correct order for the test is

A. I, II, III and IV.

B. 1, Ill, II and IV.

C. II, III, I and IV

D. III, I, II and IV.


22. The best time to pluck the leaf for the experiment is

A. after being exposed to sunlight.

B. three hours after sunset.

C. before sunrise.

D. six hours after sunset.


23.In which of the plant tissues are guard cells located?

A. Epidermis

B. Mesophyll

C. Vascular bundles

D. Meristems


24. The association between two  organisms in which one of the organisms gains and the other loses is referred to as

A. saprophytism.

B. commensalism.

C. mutualism.

D. parasitism.


25. The function of the villi in the alimentary canal is to

A. secrete gastric juice.

B. curdle milk.

C. emulsify fat.

D. increase the surface area for absorption.


26. Which of the following structures is not an organ of the digestive system?

A. Oesophagus

B. Pancreas

C. Stomach

D. Kidney

The diagram below shows the effect of nitrates on water bodies.

Study it carefully and answer questions 27 to 29.

27. The source of the nitrates in the part labelled I is the

A. root nodules of legumes.

B. cloud.

C. fertilizers.

D. organic tuatter.


28. The phenomenon in the diagram is termed

A. denitrification.

B. conservation.


D. global warming.


29. Another cause that could lead to the phenomenon in the diagram is

A. exhaust from cars.

B. oil spillage.

C. dumping of sewage.

D. excess rainfall.


30. In ecology, a community refers to

A. a number of individuals ofa given species.

B. groups of different organisms living in a habitat.

C. existing species in an abandoned farm land.

D. the dominant species in a habitat.


31. The direction of wind is determined by

A. an anemometer.

B. a Secchi disc.

C. a wind vane.

D. a barometer


32. Food webs are complex because

A. the number of producers are large.

B. many animals feed directly on producers.

C. they include primary, secondary and tertiary consumers.

D. some animals form part of several food chains.


33. Special modifications which enable an organism to survive in its habitat is known as

A. adaptation.

B. tolerance.

C. mimicry.

D. colouration.


34. Which of the following relationships does not involve two organisms?

A. Commensalism

B. Saprophitism

C. Symbiosis

D. Parasitism


35. Overcrowding in a population does not result in

A. death.

B. commensalism.

C. competition.

D. migration.


36. A pandemic is an outbreak of disease that

A. is confined to a town.

B. is widespread.

C. will not spread.

D. has limited spread.


37. The rational and prudent use of natural resources is known as

A. preservation.

B. conservation.

C. utilization.

D. management.


38. Which of the following natural resources cannot be conserved?

A. Soil

B. Water

C. Wildlife

D. Air


39. Which of the following actions supports conservation? To

A. protect endangered species.

B. preserve trees for timber.

C. permit hunting activities.

D. provide income for the government.


40. A noticeable physical appearance of individuals of the same species is called

A. physical variation.

B. physiological variation.

C. morphological variation.

D. discontinuous variation.


41. A blend of inherited and acquired characteristics shows

A. variation.

B. inheritance.

C. evolution.

D. heredity.


42. A cross between two parents produced four offspring with blood groups AB, BB, BO and AO.

What is the blood group of their parents?

A. AA and BO

B. BB and AO

C. AB and BO

D. AB and AO


43. A sick baby was successfully transfused with blood from the father who has blood group AB.

What is the group of the sick baby?

A. A

B. B


D. O


The illustration below represents a cross between a colour - blind male and a normal female.

Study it carefully and answer questions 44 and 45.



44. What is the genotypic ratio of carrier females to normal males in the cross?

A. 1 : 1

B. 2 : 3

C. 3 : 4

D. 4 : 1


45.Which of the genotype are carriers of colour blindness?

A. I and II only

B. I and III only

C. II and III only

D. I, II and III only


46. Scientists who study genetics are known as

A. genealogist

B. geneticist

C. mendalists

D. genescientists


47. Which of the following scientists did not contribute to the development of genetics?

A. Wilhem Johannsen

B. Felix Durjadin

C. Thomas Morgan

D. Gregor Mendel


48. Which of following terms is associated with natural selection?

A. Adaptive radiation

B. Differential reproduction

C. Population variability

D. Survival of the fittest


49. In which of the following insects is group instinct not displayed?

A. Soldier ants

B. Cockroaches

C. Honeybees

D. Termites


50.The inability of an organism to adapt to its habitat can lead to

A. dormancy.

B. adaptation.

C. extinction.

D. survival.