JAMB Biology Past Questions & Answers - Page 392

1,956.

The rate of transpiration of a leafy shoot would be highest under 

A.

damp, cold, still air

B.

damp, warm, moving air

C.

dry, warm, moving air

D.

dry, cold, moving air

E.

dry, warm, still air

Correct answer is C

No explanation has been provided for this answer.

1,957.

Milk protein is hydrolyzed by

A.

renin

B.

amylase

C.

lipase

D.

lactase

E.

pepsin

Correct answer is E

There are two common ways of achieving hydrolysis of milk proteins. You can either boil in a strong acid/ base for a very long time, or use an enzyme like PANCREATIC PROTEASE to simulate hydrolysis naturally. Pepsin is an example of pancreatic proteases.

1,958.

Which of the following instruments is used to demonstrate the response of roots and shoots to gravity? 

A.

Clinostat

B.

Manometer

C.

Porometer

D.

Potometer

E.

Photometer

Correct answer is A

Clinostat : A device used in experiments to test the influence of gravity on the growth movements of plants (see geotropism).

1,959.

Spirogyra reproduces vegetatively by 

A.

spore production

B.

fragmentation

C.

multiple fission

D.

budding

E.

binary fission

Correct answer is B

No explanation has been provided for this answer.

1,960.

Which of the following is NOT a function of the liver?

A.

Regulation of blood sugar

B.

Storage of iron

C.

Formation of bile

D.

Breakdown of excess amino acids

E.

Excretion of urea from the blood

Correct answer is E

No explanation has been provided for this answer.