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WAEC Biology

Page 10

The association between two organism in which one of the organism gains and the other loses is referred to as

a.

saprophytism

b.

commensalism

c.

mutualism

d.

parasitism

The function of the villi in the alimentary canal is to

a.

Secrete gastric juice

b.

curdle milk

c.

emulsify fat

d.

increase the surface area for absorption

The exchange of gases between the environment and the respiratory organs of vertebrates is referred to as

a.

inhalation

b.

respiration

c.

expiration

d.

breathing

A cross between two parents produced four offspring with blood groups AB, BB, BO and AO. What is the blood group of their parents

a.

AA and BO

b.

BB and AO

c.

AB and BO

d.

AB and AO

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