Waec Biology Past Questions and Answers

Question 746:

• WAEC 2001

Which of the following associations can upset the balance of nature?

A. Epiphitism
B. Parasitism
C. Symbiosis
D. Saprophytism

Question 747:

• WAEC 2001

Which of the following groups of factors do the Agama lizards compete for? I. Space II. Food III. Mates

A. Space and food only
B. Space and mates only
C. Food and mates only
D. Space, food and mates

Question 748:

• 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 749:

• 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 750:

• 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