Biology 1991 Waec Past Questions and Answers

Question 51 :

• 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 52 :

• 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 53 :

• 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 54 :

• 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

Question 55 :

• WAEC 1991

who formulated the theory of natural selection in evolution?

A. Louis pasteur
B. Robert Hooke
C. Jean Lamarck
D. Mathias Schlieden
E. Charles Darwin