Waec Biology 1997 Past Questions and Answers

Question 16:

• WAEC 1997

The early removal of the pituary gland in animals may cause

A. Ceasation of growth
B. Gigantism
C. Poor mental development
D. Goitre
E. Inability to digest food

Question 17:

• WAEC 1997

A high concentration of auxin in the root will

A. Inhibit growth
B. Stimulate growth
C. Not affect growth
D. Cause the root to roth
E. Reduce water absorption

Question 18:

• WAEC 1997

The part labelled II in the diagram is the

A. Central canal
B. Grey matter
C. Spinal cord
D. Dorsal root
E. Vertebrarterial canal

Question 19:

• WAEC 1997

Which of the labelled parts is filled with cerebrospinal fluid?

A. V And I
B. V only
C. III only
D. II and I
E. I only

Question 20:

• WAEC 1997

Which of the following is an example of a reflex action?

A. Sneezing
B. Biting
C. Dancing
D. Singing
E. Talking