Biology 1998 Waec Past Questions and Answers

Question 31 :

• WAEC 1998

The function of the part labelled V in the diagram is the

A. Manufacture of food
B. Storage of food
C. Secretion of digestive enzymes
D. Protection of the radicle
E. Absorption of mineral salts

Question 32 :

• WAEC 1998

Which of the following is a feature of wind pollinated flowers?

A. Large and brightly coloured petals
B. Possession of sweet scent
C. Presence of nectar
D. Presence of pollen guides
E. Smooth, light and numerous pollen grains

Question 33 :

• WAEC 1998

In testing for starch in a leaf the function of alcohol is to

A. Kill the cells of the leaf
B. Soften the veins of the leaf
C. Aid iodine to penetrate the cells
D. Be a component of the heating bath
E. Extract the chlorophyll from the leaf

Question 34 :

• WAEC 1998

Which of the following processes removes CO² from the atmosphere?

A. Respiration
B. Photosynthesis
C. Transpiration
D. Excretion
E. Combustion

Question 35 :

• WAEC 1998

The role of bacteria in the nitrogen cycle includes the following except

A. Fixing atmospheric nitrogen
B. Converting ammonia to nitrites
C. Converting nitrites to nitrates
D. Converting carbohydrates to carbondioxide
E. Causing the decay of dead organisms