WAEC Biology Past Questions & Answers - Page 367

1,831.

The part of the brain that controls voluntary movement and interprets sensation is the

A.

cerebrum

B.

cerebellum

C.

optic lobe

D.

medulla oblongata

E.

olfactory lobe

Correct answer is A

No explanation has been provided for this answer.

1,832.

The human skin is regarded as a sense organ because it

A.

separates the body from the outside world

B.

protects the body from cold and heat

C.

regulates the water content of the body

D.

has an outer layer of dead cells

E.

has nerve endings

Correct answer is E

No explanation has been provided for this answer.

1,833.

If a germinating seed is attached horizontally on a revolving klinostat, what will be the effect of the seedling after three days? The

A.

plumule will curve vertically upward while the radicle will curve towards the ground

B.

plumule and radicle will not show any curvature

C.

radicle will curve towards the ground while the plumule will not show any curvature

D.

plumule will curve vertically upward while the radicle will not show any curvature

E.

plumule and radicle will curve towards the ground

Correct answer is B

No explanation has been provided for this answer.

1,834.

When thyroxin is over-secreted, it could likely lead to 

A.

thinness

B.

sluggishness

C.

cretinism in infants

D.

reduced metabolism

E.

dwarfism

Correct answer is A

No explanation has been provided for this answer.

1,835.

Growing radicles of seedlings are

A.

negatively phototropic

B.

positively phototropic

C.

negatively geotropic

D.

negatively hydrotropic

E.

positively phototactic

Correct answer is A

No explanation has been provided for this answer.