Waec Biology Past Questions and Answers

Question 651:

• WAEC 2000

The condition shown in the above diagram is due to

A. Conversion of starch to sugar
B. Conversion of sugar to starch
C. Excess water in structure labelled I
D. Presence of carbondioxide in the structure labelled I

Question 652:

• WAEC 2000

Which of the following solutions will induce the condition shown in the diagram?

A. Hypertonic solution
B. Hypotonic solution
C. Isotonic solution
D. Distilled water.

Question 653:

• WAEC 2000

Which of the following conditions will cause a decrease in body temperature?

A. Increased metabolism
B. Shivering
C. Vasoconstriction of capillaries of the skin
D. Relaxation of the erector muscles

Question 654:

• WAEC 2000

The organs constantly in touch with the liver are

A. Pancreas, colon and caecum
B. Duodenum and stomach
C. Illeum, stomach and colon
D. Stomach and gall bladder

Question 655:

• WAEC 2000

Which of the following is responsible for the increased heart beat of a boy who saw a python? increased
production of

A. Adrenalin
B. Insulin
C. Pituitrin
D. Thyroxin