Co-ordination and control - Jamb Biology Past Questions and Answers

Question 66:

• JAMB 1991

A dwarf plant can be stimulated to grow to normal height by the application of

A. Thyroxin
B. Gibberellin
C. Insulin
D. Kinin

Question 67:

• JAMB 1992

Melanin and keratin are produced in the part labelled

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

Question 68:

• JAMB 1992

Neurons that receive stimuli from the body or internal organs are called

A. Sensory neurons
B. Efferent neurones
C. Motor neurones
D. Relay neurones

Question 69:

• JAMB 1993

On what structure are the units of inheritance situated?

A. Golgi bodies
B. Ribosomes
C. Chromosomes
D. Endoplasmic reticulum

Question 70:

• JAMB 1993

interveinal chlorosis is normally associated with the deficiency of

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