Question 281:

• JAMB 1982

Which of these parts of the mammalian ears is directly concerned with the sense of balance?

A. Cochlea
B. Eustachian tube
C. Ear-drum
D. Pinna
E. Semicircular canals

Question 282:

• JAMB 1982

When freshly tapped palm wine was kept overnight it was found to be more alcoholic. This effect must have been due to

A. The addition of saccharin
B. The addition of sugar
C. The addition of whisky or local gin
D. Some complex hydrolytic reaction
E. Anaerobic respiration of an organism

Question 283:

• JAMB 1982

If a farmer left his land uncultivated for five years before returning to it, he must be practising

A. Modern agriculture
B. Strip cropping
C. Contour ridging
D. Crop rotation
E. The bush fallow system

Question 284:

• JAMB 1982

A pyramid of numbers can be defined as

A. The number of plants and animals in an ecosystem
B. An arrangement of organism according to their habitat
C. The numerical relationships of a food chain
D. The number of plants and animals in a population
E. The total number of species and general in a community

Question 285:

• JAMB 1982

In man, spermatozoa are never found in the

A. Testis
B. Urethra
C. Epididymis
D. Prostrate glands
E. Vas deferens