Waec Biology 1996 Past Questions and Answers

Question 26:

• WAEC 1996

What is the importance of the part labelled II to the seedling?
It

A. Protects the foliage leaves
B. Grows into the first foliage leaves
C. Later develops into the fruit
D. Provides the seedling with food
E. Serves as the water reservoir for the seedling

Question 27:

• WAEC 1996

In grasshopper/cockroach digestion starts from the

A. Oesophagus
B. Crop
C. Gizzard
D. Midgut
E. Mouth

Question 28:

• WAEC 1996

In a water culture experiment, the culture solution in a transparent beaker turned green. What precaution
should have been taken to prevent the culture solution from turning green?

A. Changing the culture solution regularly
B. Increasing the number of times the culture is aerated
C. Covering the transparent beaker with black cloth
D. Adding warm alcohol to bleach the green colour
E. Sterilizing the beaker in a hot oven before use

Question 29:

• WAEC 1996

Which of the following is responsible for the conversion of nitrites to nitrates in the nitrogen cycle?

A. Denitrifying bacteria
B. Nitrifying bacteria
C. Lightening
D. Fungi
E. Brown algae

Question 30:

• WAEC 1996

Hydra captures small crustaceans by means of

A. Pseudopodia
B. Musculo-epithelial cells
C. Tentacles
D. Enteron
E. Ectoderm