Which of the following ecological factors are common to both terrestrial and aquatic habitats?

Which of these disease CANNOT be prevented by immunization?

In an agricultural ecosystem, the biotic component consists of

In an ecosystem, animals which feed directly on plants are called

An instrument that can be used to demonstrate phototropism and geotropism in plants is the

Sample of different soil types are packed in glass tubes whose lower ends are plugged with cotton wool, if these tubes are suspended in a trough of water, water will rise highest after a few hours in

The following are methods of soil conservation EXCEPT

A larger percentage of tropical soils tends to be acidic because they

The swollen shoot disease of cocoa tree is caused by a

In community, bacteria and fungi are referred to as

1986 JAMB UTME Biology Past Questions