The complex relationship between the members of a community and their physical environment is known as________

A. commensalism

B. symbiosis

C. saprophytism

D. ecology

The specific role of a species within íts environment is known as its_________

A. habitat

B. niche

C. trophic level

D. biotic community

Which of the following soil fertility improvement methods will have the most negative effect on the ecosystem if not controlled?

A. Application of N-P-K fertilizer

B. Shifting cultivation

C. Mixed farming

D. Crop rotation

Organisms in an ecosystem are usually grouped according to their trophic level into__________

A. carnivores and omnívores,

B. consumers and parasites

C. producers, and saprophytes

D. Producers and consumers

In the pyramid of energy illustrated above, the organism with the least amount of transferred energy is___________

A. Spirogyra

B. Tadpole

C. Fish

D. Bird

Tall trees with unbranched trunks which grow above the upper storey of the forest are commonly referred to as _____

A. Emergents

B. Herbs

C. Lianes

D. Shrubs

Maize grains are best stored against insect attacks by__________________

A. keeping in a silo

B. storing in the room

C. leaving them on their cobs

D. covering with leaves

Cholera is mostly spread by_______

A. air

B. soil

C. water

D. noise

Which of the following resources is renewable?

A. Petroleum

B. Coal

C. Iron

D. Trees

Which of the following roles is not performed by a government agency responsible for forest maintenance?

A. Regulating the harvest of timber and poaching

B. Creating, protecting and managing the forest reserves

C. Tracking the movement of timber, wood, and wildlife

D. Regulating mining activities in the forest