Waec Biology Past Questions and Answers

Question 496:

• WAEC 1997

Which of the following characteristics distinguishes the soldier termite from other members of the caste?

A. Wingless, strong mandibles and large head
B. Small head, small thorax and large abdomen
C. Small head, Wingless, and small thorax
D. Small head, winged and small thorax
E. Small mandibles, small head and wingless.

Question 497:

• WAEC 1997

Bees communicate with one another to obtain information about the direction of food source through

A. Complicated set of dances
B. Smell
C. Contract notes
D. Observation
E. Sounds

Question 498:

• WAEC 1997

Which of the following behavioural patterns describes adaptive colouration?

A. Counter shadding
B. Hibernation
C. Aestivation
D. Aggregation
E. Migration

Question 499:

• WAEC 1997

(a) Describe an experiment to compare the water-holding capacity of sandy, loamy and clayey soils.
(b) List three factors that may affect the water-holding capacity of soils.
(c) (i) State the characteristics of sandy and loamy soils.
(ii) What type of vegetation does each support?

Question 500:

• WAEC 1997

(a) Explain the following terms:
(i) first aid
(ii) artificial respiration
(iii) dislocation
(iv) haemorrhage
(b) (i) State three objectives of first aid.
(ii) Explain the procedure for administering the mouth-to-mouth method of artificial respiration.
(c) (i) State three signs of dislocation.
(ii) Name two ways of stopping bleeding from an open wound.