Jamb Agricultural Science 2021 Past Questions and Answers

Question 66:

• JAMB 2021

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

Question 67:

• JAMB 2021

Which of the following is a friend of farmer

A. Earthworm
B. Aphid
C. Grasshopper
D. Termite

Question 68:

• JAMB 2021

The source of food for fishes in the river is called

A. Rotten leaves
B. Planktons
C. Micro-organism
D. Algae

Question 69:

• JAMB 2021

A farmer bought a farm implement for ₦12,500 in 2007. At the end of the fourth year, he sold it for ₦4,300. The annual depreciation of the implement is

A. ₦4,300
B. ₦3,125
C. ₦2,050
D. ₦1,075

Question 70:

• JAMB 2021

The average weather condition of a place, measured over a long period of time is called

A. Climate
B. Wind
C. Rainfall
D. Temperature