WAEC Biology Past Questions & Answers - Page 143

711.

A man's blood group is AB. What is the probability of the man giving birth to a child with blood group O?

A.

0%

B.

25%

C.

50%

D.

100%

Correct answer is A

No explanation has been provided for this answer.

712.

In genetics, linkages refer to the linking of genes of the

A.

same chromosomes

B.

different chromosomes

C.

same nucleus

D.

different nuclei

Correct answer is A

A linkage refers to the presence of two different genes on the same chromosome.

713.

Which of the following statements is not a reason to conserve wildlife?

A.

Attracting tourists into the country

B.

Serving as a source of food

C.

Serving as a source of income

D.

increasing the amount of rainfall

Correct answer is D

No explanation has been provided for this answer.

714.

Which of the following human activities would help prevent endangered species from extinction?

A.

Uncontrollably killing species

B.

Regularly clearing forest vegetation

C.

Temporarily maintaining species in zoological gardens

D.

Regularly irrigating their natural habitats

Correct answer is C

No explanation has been provided for this answer.

715.

The absence of an alimentary canal in the parasitic flatworm can be attributed to the fact that

A.

its body does not feed

B.

it has no enzymes

C.

its body absorbs digested food

D.

it has suckers on the scolex

Correct answer is C

No explanation has been provided for this answer.