Jamb Biology 1992 Past Questions and Answers

Question 26:

• JAMB 1992

Double fertilization in higher plants is significant because it ensures the

A. Formation of a fertile embryo
B. Formation of a fertile embryo and the endosperm
C. Developement of the seed
D. Developement of the fruit

Question 27:

• JAMB 1992

In mammalian development, the function of the yolk is to

A. Supply nutrients to the embryo
B. Act as the shock-absorber to the foetus
C. Supply air to the embryo
D. Facilitates the process of excretion in the foetus

Question 28:

• JAMB 1992

Hypogeal germination is characterized by the

A. Emergency of the plumule out of the ground
B. Provision of nourishment by the endosperm
C. Elongation of the hypocotyl
D. Elongation of the epicotyl

Question 29:

• JAMB 1992

Fruits which develop without fertilization of the ovule are

A. False
B. Multiple
C. Aggrgate
D. Parthenocarpic

Question 30:

• JAMB 1992

Which part of the curve represents the fastest rate of growth?

A. K
B. L
C. M
D. N