Waec Biology Past Questions and Answers

Question 216:

• WAEC 1992

Which of the following organisms reduces nitrates in the soil to gaseous nitrogen?

A. Euglena
B. Protozoan
C. Denitrifying bacterium
D. Parasitic mould
E. Nitrifying bacterium

Question 217:

• WAEC 1992

What type of relation exists between a tapeworm and an infected mammal?

A. Symbiosis
B. Commensalism
C. Predation
D. Parasitism
E. Saprophytism

Question 218:

• WAEC 1992

Which of the following best describes a marine habitat?

A. Large body of water
B. Which has no distinctive color or taste
C. With high concentration of salt
D. With little suspended materials
E. With no water weed

Question 219:

• WAEC 1992

The following are features of the tropical rain forest except

A. Abundant water supply
B. Loose and moist soil
C. Short trees growing benealth tall trees
D. Scanty trees with small leaves
E. Presence of many animals

Question 220:

• WAEC 1992

The following are features of Northern Guinea Savanna except

A. Presence of tall trees with thick bark
B. Bare soil with very few trees
C. Presence of fire-resistant trees
D. Abundant herbivores
E. Predominance of woody trees