Jamb Biology Past Questions and Answers

Question 311:

• JAMB 1983

Groundnut is not really a 'nut' in the biological sense because

A. It is harvested from inside the ground
B. Pericarp is not hard and tough
C. The fruit is not as hard as coconut
D. The fruit is not succulent
E. It is an achene

Question 312:

• JAMB 1983

What type of fruit is formed from a single flower having several carpels?

A. Multipe fruit
B. Simple fruit
C. Aggregrate fruit
D. Dehiscent fruit
E. Indehiscent fruit

Question 313:

• JAMB 1983

28 g soil sample was heated to a constant weight of 24 g. When further heated to red hot and cooled, it weighed 18 g. What is the percentage of humus in the soil?

A. 22.2
B. 55.6
C. 75.0
D. 25.0
E. 35.7

Question 314:

• JAMB 1983

Which of the following diseases is NOT caused by a virus?

A. Rinderpest
B. Maize rust
C. Newcastle diseases
D. Swine fever
E. Cassava mosaic diseases

Question 315:

• JAMB 1983

A centipede differs from a millipede by its

A. Colour
B. Numerous abdominal segment
C. Paired legs on each abdominal segment
D. Poison claws
E. Cylindrical body