WAEC Past Questions and Answers - Page 3322

16,607.

Individuals belonging to the blood group O are universal donors because ?

A.

antigens are absent in thier blood cells

B.

members of the group consitutute the highest number of humans

C.

there are no of antibodies in thier blood plasma

D.

the antigens in thier blood cells are easily destroyed

Correct answer is A

No explanation has been provided for this answer.

16,608.

Which of the followig traits in humans is an example of physiological variation?

A.

skin colour

B.

fingerprint

C.

tongue rolling

D.

height

Correct answer is C

No explanation has been provided for this answer.

16,609.

An accident victim was successfully transfused with blood from the father whose blood group is 

A.

B

B.

O

C.

AB

D.

A

Correct answer is C

No explanation has been provided for this answer.

16,610.

The use of a lighter instead of matchsticks is a way of conserving

A.

petroleum

B.

forest

C.

water

D.

wildlife

Correct answer is B

No explanation has been provided for this answer.