WAEC Biology Past Questions & Answers - Page 109

541.

Reading the verdict of a case by a judge or magistrate is an example of

A.

a reflex action

B.

an instinct

C.

a conditioned reflex

D.

a voluntary action

Correct answer is D

The Cerebrum is known to majorly co-ordinate all the body's voluntary activities like learning, reasoning and intelligence.

542.

Which of the following glands secretes a substance into the blood stream of a frightened person?

A.

Adrenal glands

B.

Salivary glands

C.

Gastric glands

D.

Parathyroid glands

Correct answer is A

No explanation has been provided for this answer.

543.

Which of the following takes place when a person’s body temperature rises above 37oC

A.

Sweating and vasoconstriction

B.

Panting and vasoconstriction

C.

Sweating and vasodilation

D.

Panting and vasodilation

Correct answer is C

No explanation has been provided for this answer.

544.

A faster colour change of a dry cobalt chloride paper affixed to the lower surface of a leaf than the upper one, indicates that

A.

sunlight slows down water loss from the upper surface

B.

the lower surface of the leaf has more stomata

C.

Sunlight causes the stomata on the upper surface to close

D.

stomata are not present on the upper surface of a leaf

Correct answer is B

No explanation has been provided for this answer.

545.

In plants, respiration occurs in

A.

mesophyll cells only

B.

the root only

C.

the stomata and lenticel only

D.

all living cells

Correct answer is C

No explanation has been provided for this answer.