The following are features of the tropical rain forest except

A. abundant water supply

B. loose and moist soil

C. short trees growing benealth tall trees

D. scanty trees with small leaves

E. presence of many animals

The following are features of Northern Guinea Savanna except

A. presence of tall trees with thick bark

B. bare soil with very few trees

C. presence of fire-resistant trees

D. abundant herbivores

E. predominance of woody trees

Which of the following explains the term pyramid of numbers?

A. the number of organisms in a trophic level

B. the relationship between plants in different trophic levels

C. the number of saprophytes and parasites in a habitat

D. the number of predators in a habitat

E. progressive decrease in the number of individuals from lower to higher trophic level

In which of the following processes is carbondioxide not given out?

A. respiration in plants

B. decay of organism

C. burning of organic matter

D. burning of fuels

E. during photosynthesis

Sea water taken in by a living organism can berecycled into the atmosphere through all the following processes except

A. Sewage

B. Industrial wastes

C. Fertilizers

D. Crude oil

Which of the following is not an adaptation of plants or animals to desert environment?

A. Well developed tap root system

B. small leaves with thick epidermis

C. Stems with spike-like leaves

D. Metabolic waste in the form of uric acid in some animals

E. Broad leaves for storage

Which of the following is not an adaptation of plants or animals to desert environment?

A. Well developed tap root system

B. Small leaves with thick epidermis

C. Stems with spike-like leaves

D. Metabolic waste in the form of uric acid in some animals

E. broad leaves for storage

A climax community is characterised by

A. a stable composition of plant and animal species

B. rapid changes in the composition of species

C. constant changes in appearance of the habitat

D. different species occurring at different times

E. gradual change in animal population

Which of the following is not a characteristic of overcrowding in plant and animal community?

A. Population outstripping available space

B. Population exceeding available food

C. Competition within the population

D. increase in primary production

E. population increasing at the same rate as the bith rate

The use of predators or parasites to control pests in the farm is known as

A. predator control

B. chemical control

C. biological control

D. animal control

E. parasitic control