Waec Biology Past Questions and Answers

Question 186:

• WAEC 1991

Which of the following limiting resources is competed for by organism in the desert?

A. Light
B. Temperature
C. Oxygen
D. Water
E. Carbondioxide

Question 187:

• WAEC 1991

The adaptation for water conservation in organisms include the following except

A. Scales in fishes
B. Scales on leaves
C. Thick leaves
D. Spine in plants
E. Succulent stem

Question 188:

• WAEC 1991

Which of the following structures is a protective adaptive feature of the Agama lizard to terrestrial habitat?

A. Claws
B. Gular fold
C. Scaly skin
D. Nuchal crest
E. Tail

Question 189:

• WAEC 1991

which of the following statements best explains the term aestivation?

A. A device for survival during a period of extreme food and water shortage
B. A method of survival adopted by plants during dry season
C. Movement of animals over long distance
D. A method of survival adopted by animals under favourable condition
E. A device for rapid multiplication during abundance of food

Question 190:

• WAEC 1991

The phenomenon whereby some organisms with certain features get established in an environment is known as

A. Partial selection
B. Artificial selection
C. Natural selection
D. Mutation
E. Colonization