WAEC Biology Past Questions & Answers - Page 168

836.

Which of the following variations is applicable to a weight lifter?

A.

Continuous variation

B.

Discontinuous variation

C.

Hereditary variation

D.

Acquired variation

Correct answer is A

No explanation has been provided for this answer.

837.

Use the human characteristics to answer this question.

i. Complexion
ii. Height
iii. Blood Rh factor
iv. Colour blindess

Which of the characteristics can be expressed phenotypically?

A.

I and II only

B.

I, II and IV only

C.

I, III and IV only

D.

I, II and III only

Correct answer is B

No explanation has been provided for this answer.

838.

Use the human characteristics to answer this question.

I. Complexion
II. Height
III. Blood Rh factor
IV. Colour blindness

Which of the above human characteristics are discontinuous variations?

A.

I and III only

B.

II and III only

C.

II and IV only

D.

III and IV only

Correct answer is D

No explanation has been provided for this answer.

839.

In medicine, bacteria have proved very useful due to the production of

A.

nitrate

B.

antibiotics

C.

cured tobacco

D.

tanned leather

Correct answer is B

No explanation has been provided for this answer.

840.

Fresh milk is often kept in refrigerated vehicles, for distribution to customers in order to

A.

ensure proper share of fresh milk to all customers

B.

ensure delivery of milk to customers in good time

C.

improve the quality of the milk

D.

ensure that the milk is presented for a longer period

Correct answer is D

No explanation has been provided for this answer.