Jamb Biology Past Questions and Answers

Question 306:

• JAMB 1983

Which of the following substance is not found in urine?

A. Water
B. Sodium chloride
C. Nitrogenous compounds
D. Calcium chloride
E. Nitrogenous salts

Question 307:

• JAMB 1983

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

Question 308:

• JAMB 1983

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

Question 309:

• JAMB 1983

The part of the mammalian brain responsible for maintaining balance is the

A. Medulla oblongata
B. Olfactory lobe
C. Cerebellum
D. Cerebrum
E. Frontal lobe

Question 310:

• JAMB 1983

In the onion bulb, food is stored in the

A. Stem
B. Lateral buds
C. Cotyledons
D. Outer scale leave
E. Leaf base