Jamb Biology Past Questions and Answers

Question 91:

• JAMB 1978

In a breeding program a cross was made between two true breeding cow-pea types: one with round seeds and the other with wrinkled seed. If roundness is dominant why wrinkleness is recessive, in the first filial generation all the seeds produced will be

A. 25% wrinkled, 75% round
B. 100% wrinkled
C. 50% wrinkled, 50% round
D. 75% wrinkled, 25% round
E. 100% round

Question 92:

• JAMB 1978

During reproduction of the organism in figure above the first structure to divide is?

A. 1
B. 2
C. 3
D. 4
E. 5

Question 93:

• JAMB 1978

The part numbered 12 is

A. Pectoral fin
B. Scale
C. Opercular plate
D. Gill plate
E. Pectoral girdle

Question 94:

• JAMB 1978

During the movement of the fish from point A to target B, one of these parts is not involved

A. 7
B. 5
C. 3
D. 6
E. 10

Question 95:

• JAMB 1978

The number shown as 8 refers to

A. Upper epidermise
B. Cuticle
C. Stoma
D. Guard cell
E. Lower epidermis