Waec Biology Past Questions and Answers

Question 1376:

• WAEC 2011

The rate of decomposition of organisms is faster in the tropical rain forest than in other biomes because

A. Of the relatively constant daylight
B. There are more plants per square feet
C. Of abundance of water
D. Of constant cool temperature

Question 1377:

• WAEC 2011

A xerophyte conserves water by possession of the following features except

A. Thick cuticle
B. Sunken stomata
C. Broad leaves
D. Fleshy stem

Question 1378:

• WAEC 2011

The falling off of leaves of deciduous trees is helpful to the plant because it

A. Reduces the rate of transpiration
B. Enables the plant to conveniently eliminate its excretory products
C. Enables the plant to bear more fruits
D. Ensures that the limited mineral salts get to only growing regions

Question 1379:

• WAEC 2011

A sample of wet garden soil of known weigh was heated to constant weight. The loss of weight is due to loss of

A. Water
B. Organic matter
C. Water and organic matter
D. Water and inorganic matter

Question 1380:

• WAEC 2011

Assuming that a period of stable population size is followed by a period when natality increases by ten (1O) per cent and immigration increases by twenty (20) percent of population size. The population size will

A. Be at equilibrium
B. Increase by forty (40) per cent
C. Begin to increase
D. Begin to decrease