JAMB Agricultural Science Past Questions & Answers - Page 59

291.

The source of food for fishes in the river is called

A.

Rotten leaves

B.

Planktons

C.

Micro-organism

D.

Algae

Correct answer is B

The source of food for fishes in the river are planktons.

292.

Which of the following is a friend of farmer?

A.

Earthworm

B.

Aphid

C.

Grasshopper

D.

Termite

Correct answer is A

Earthworms are referred to as farmer friend because they improve soil structure, water holding capacity and enrich soil nutrients.

293.

Rocks formed by the cooling and solidification of molten rocks called magma ejected from beneath the earth's crust is

A.

Igneous rock

B.

Metamorphic rock

C.

Caleima rock

D.

Sedimentary rock

Correct answer is A

Rocks formed by the cooling and solidification of molten rocks called magma ejected beneath the earth's crust are igneous rocks.

294.

What is the full meaning of IITA?

A.

International Institute of Tropical Agriculture

B.

International Institution of Tropical Agriculture

C.

Institute of Investment and Trade Agriculture

D.

Interlude Institute of Tropical Agriculture

Correct answer is A

IITA stands for The International Institute of Tropical Agriculture (IITA).

295.

Which of the following is not a characteristic of metamorphic rock?

A.

They are colourless

B.

Some occur in layers

C.

They may contain fossils

D.

They may be hard and massive

Correct answer is C

Metamorphic rocks have been put under great pressure, heated, squashed or stretched and fossils do not survive these extreme conditions.