JAMB Biology Past Questions & Answers - Page 364

1,816.

Which of the following food substance will produce a brick-red colour when warmed with Benedict's solution?

A.

Glucose

B.

Starch

C.

Egg white

D.

Maltose

Correct answer is A

No explanation has been provided for this answer.

1,817.

The first step in the process of photosynthesis is the 

A.

activation of the chlorophyll

B.

photolysis of water

C.

reduction of carbondioxide

D.

formation of sugar

Correct answer is A

No explanation has been provided for this answer.

1,818.

The mode of nutrition in which digestion is extracellular is

A.

holophytic

B.

parasitic

C.

holozoic

D.

saprophytic

Correct answer is D

No explanation has been provided for this answer.

1,819.

The movement of plant in response to external stimulus of no particular direction is 

A.

taxism

B.

tropism

C.

hyptotropic movement

D.

nastic movement

E.

phototropism

Correct answer is D

No explanation has been provided for this answer.

1,820.

The kidneys of all vertebrates act as osmoregulators. This means that they 

A.

keep the composition of the plasma constant

B.

regulate osmotic processes

C.

control the volume of blood entering the kidneys

D.

decrease the osmotic pressure of the blood

E.

increase the osmotic pressure of blood

Correct answer is B

No explanation has been provided for this answer.