Biology 1988 Waec Past Questions and Answers

Question 21 :

• WAEC 1988

Which of the following does not occur during photosynthesis?

A. Energy from sunlight is absorbed
B. Carbondioxide is evolved
C. Glucose is synthesized
D. Oxygen is given
E. Water is split

Question 22 :

• WAEC 1988

Even though some flowering plants contain accessory pigments which give them colours they still contain
the pigment

A. Melanin
B. Chlorophyll
C. Xanthrophyll
D. Carotene
E. Chlorocruorin.

Question 23 :

• WAEC 1988

Which of the following is not regarded as a micro-nutrient or trace element for plant growth?

A. Phosphorus
B. Zinc
C. Boron
D. Silicon
E. Molybdenum

Question 24 :

• WAEC 1988

In a water culture experiment a plant showed poor growth and yellowing of the leaves. These symptoms
were probably due to the absence of

A. Calcium
B. Phosphorus
C. Iron
D. Zinc
E. Copper

Question 25 :

• WAEC 1988

The relationship between a herbivore and the bacteria which live in its caecum is known as

A. Parasitism
B. Symbiosis
C. Commensalism
D. Saprophytism
E. Predation