Jamb Biology 1993 Past Questions and Answers

Question 11:

• JAMB 1993

The butterfly is of great economic importance because

A. Of its use in scientific studies
B. It sucks nectar from flowers
C. It adds to the beauty of the enviroment
D. It polllinates flowers of crops and other plants

Question 12:

• JAMB 1993

Manufactured food in the plant is transported through the

A. Xylem
B. Phloem
C. Cambium
D. Cortex

Question 13:

• JAMB 1993

interveinal chlorosis is normally associated with the deficiency of

A. Magnesium
B. Potassium
C. Iron
D. Calcium

Question 14:

• JAMB 1993

Osmic acid boiled with a solution of food substance gave a black precipitate. This indicates the presence of

A. Fats and oil
B. Proteins
C. Amino acids
D. Starch

Question 15:

• JAMB 1993

Which of the labelled parts is the diastema?

A. 2
B. 3
C. 4
D. 6