JAMB Biology Past Questions & Answers - Page 290

1,446.

The part of the brain that regulates most biological cycles in humans is

A.

olfactory lobe

B.

optic lobe

C.

medulla oblongata

D.

pineal body

Correct answer is C

The medulla oblongata is a portion of the hindbrain that controls autonomic (nervous system) functions in humans.

1,447.

The substance that is responsible for optical dominance in plants is known as

A.

gibberellin

B.

tannin

C.

auxin

D.

kinin

Correct answer is C

No explanation has been provided for this answer.

1,448.

In which of the following groups of vertebrates would the largest amount of yolk be found in the egg?

A.

Mammals

B.

Fish

C.

Amphibians

D.

Reptiles

Correct answer is D

No explanation has been provided for this answer.

1,449.

The companion cells are part of the

A.

pericycle

B.

phloem

C.

pith

D.

xylem

Correct answer is B

No explanation has been provided for this answer.

1,450.

A band of connective tissue linking two bones in a joint is known as a

A.

tendon

B.

cartillage

C.

synovial membrane

D.

ligament

Correct answer is D

No explanation has been provided for this answer.