Waec Biology 1996 Past Questions and Answers

Question 16:

• WAEC 1996

In which of the following groups is nephridium found?

A. Crustaceans
B. Reptiles
C. Birds
D. Mammals
E. Annelids

Question 17:

• WAEC 1996

The maintenance of a constant internal environment of an organism is known as

A. Homeostasis
B. Homeorhesis
C. Turgidity
D. Homoiothermy
E. Diuresis

Question 18:

• WAEC 1996

Which of the following is the effect of continuous tillage on an ecological system?

A. Addition of more. humus to the soil
B. Decrease in productivity
C. Increase in yield
D. Improved fertility
E. Prevention of erosion

Question 19:

• WAEC 1996

The most sensitive part of the retina is called

A. Blindspot
B. Conjuctiva
C. Fovea centralis
D. Choroid coat
E. Sclerotic coat

Question 20:

• WAEC 1996

Which of the following pairs consists of gametes?

A. Ova and spermatozoa
B. Spores and sporangium
C. Flowers and pollen grains
D. Testes and ovaries
E. Gametophyte and sporophyte