Waec Biology 2001 Past Questions and Answers

Question 51:

• WAEC 2001

Which of the following structures in a housefly aids in the transmission of diseases in man?

A. Hairs
B. Spiracles
C. Antennae
D. Wings

Question 52:

• WAEC 2001

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

Question 53:

• WAEC 2001

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

Question 54:

• WAEC 2001

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

Question 55:

• WAEC 2001

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

A. Nitrate
B. Antibiotics
C. Cured tobacco
D. Tanned leather