Which of these is not correct about the tse-tsefly and mosquito? They

A. harbour protozoa as disease agents

B. possess piercing and sucking mouth parts

C. have intermediate hosts

D. inject disease- causing organisms into the blood stream

Which of these is a vector of malaria fever?

A. Female anopheles mosquito

B. Male anopheles mosquito

C. Female culex mosquito

D. Male culex mosquito

Fresh milk is often kept in refrigerated vehicles, for distribution to customers in order to

A. ensure proper share of fresh milk to all customers.

B. ensure delivery of milk to customers in good time

C. improve the quality of the milk

D. ensure that the milk is presented for a longer period

In medicine, bacteria have proved very useful due to the production of

A. nitrate

B. antibiotics

C. cured tobacco

D. tanned leather

I. Complexion
II. Height
III. Blood Rh factor
IV. Colour blindness

Which of the above human characteristics are discontinuous variations?

A. I and III only

B. II and III only

C. II and IV only

D. III and IV only

Use the human characteristics to answer this question.
i. Complexion
ii. Height
iii. Blood Rh factor
iv. Colour blindess

Which of the characteristics can be expressed phenotypically?

A. I and II only

B. I, II and IV only

C. I, III and IV only

D. I, II and III only

Which of the following variations is applicable to a weight lifter?

A. Continuous variation

B. Discontinuous variation

C. Hereditary variation

D. Acquired variation

The character that expresses itself in the presence of the contrasting characters

A. hybrid

B. allele

C. recessive

D. dominant

Which of the following animals exhibits territoriality?

A. Bees

B. Bats

C. Lizards

D. Rabbit