Year : 
2019
Title : 
Agric Science
Exam : 
JAMB Exam

Paper 1 | Objectives

1 - 10 of 80 Questions

# Question Ans
1.

Which of the following cereal crops most requires nursery practices?

A. Maize

B. Rice

C. Millet

D. Guinea corn

Detailed Solution

Maize, millet and guinea corn does not really require nursery.
2.

The maturity period of groundnut in month is

A. 1 - 2

B. 2 - 3

C. 4 - 5

D. 6 - 7

Detailed Solution

Groundnut (Arachis hypogea) maturity period is between four to five months
3.

Oil palm trees do well in soils with pH level of

A. 2.5 - 3.5

B. 3.5 - 4.5

C. 5.5 - 6.5

D. 6.5 - 7.5

Detailed Solution

Oil Palm (Elaeis guinensis) requires a pH scale of 5.5 to 6.5 i.e. it requires a pH scale which is acidic. Therefore, 5.5 - 6.5.
4.

The optimum temperature for storing yam tuber under cold storage is

A. 7°C

B. 9°C

C. 13°C

D. 15°C

Detailed Solution

The optimum temperature for storing yam tuber under cold storage is 280K (7°C). Therefore, 7°C is correct.
5.

Dura, Tenera and Pisifera are all cultivated varieties of

A. coconut

B. oil palm

C. rubber

D. banana

Detailed Solution

Dure, Tenera and Pisifera are cultivate varieties of oil palm. Choice B is correct.
6.

Dura, Tenera and Pisifera are all cultivated varieties of

A. coconut

B. rubber

C. banana

D. oil palm

Detailed Solution

Dure, Tenera and Pisifera are cultivate varieties of oil palm. Choice B is correct.
7.

The non-oil crop among the following is

A. coconut

B. beniseed

C. melon

D. cowpea

Detailed Solution

Choice B, A and C are oil crops but choice D is a leguminous crop. Therefore, choice D is correct.
8.

A variety of oil palm is

A. Amelonado

B. Acuminata

C. Tenera

D. Trinitario

Detailed Solution

Tenera is a variety of oil palm. Choice C is correct
9.

Fertilizer application in maize should be completed before

A. Tasseling

B. Silking

C. Riponing

D. Knee high stage

D

10.

Ideal pH for coffee cultivation is

A. 4.0 - 4.5

B. 5.0 - 5.5

C. 6.0 - 6.5

D. 6.5 - 7.5

Detailed Solution

The ideal pH of coffee is between 6.5 to 7.5. Therefore, choice D is correct.
1.

Which of the following cereal crops most requires nursery practices?

A. Maize

B. Rice

C. Millet

D. Guinea corn

Detailed Solution

Maize, millet and guinea corn does not really require nursery.
2.

The maturity period of groundnut in month is

A. 1 - 2

B. 2 - 3

C. 4 - 5

D. 6 - 7

Detailed Solution

Groundnut (Arachis hypogea) maturity period is between four to five months
3.

Oil palm trees do well in soils with pH level of

A. 2.5 - 3.5

B. 3.5 - 4.5

C. 5.5 - 6.5

D. 6.5 - 7.5

Detailed Solution

Oil Palm (Elaeis guinensis) requires a pH scale of 5.5 to 6.5 i.e. it requires a pH scale which is acidic. Therefore, 5.5 - 6.5.
4.

The optimum temperature for storing yam tuber under cold storage is

A. 7°C

B. 9°C

C. 13°C

D. 15°C

Detailed Solution

The optimum temperature for storing yam tuber under cold storage is 280K (7°C). Therefore, 7°C is correct.
5.

Dura, Tenera and Pisifera are all cultivated varieties of

A. coconut

B. oil palm

C. rubber

D. banana

Detailed Solution

Dure, Tenera and Pisifera are cultivate varieties of oil palm. Choice B is correct.
6.

Dura, Tenera and Pisifera are all cultivated varieties of

A. coconut

B. rubber

C. banana

D. oil palm

Detailed Solution

Dure, Tenera and Pisifera are cultivate varieties of oil palm. Choice B is correct.
7.

The non-oil crop among the following is

A. coconut

B. beniseed

C. melon

D. cowpea

Detailed Solution

Choice B, A and C are oil crops but choice D is a leguminous crop. Therefore, choice D is correct.
8.

A variety of oil palm is

A. Amelonado

B. Acuminata

C. Tenera

D. Trinitario

Detailed Solution

Tenera is a variety of oil palm. Choice C is correct
9.

Fertilizer application in maize should be completed before

A. Tasseling

B. Silking

C. Riponing

D. Knee high stage

D

10.

Ideal pH for coffee cultivation is

A. 4.0 - 4.5

B. 5.0 - 5.5

C. 6.0 - 6.5

D. 6.5 - 7.5

Detailed Solution

The ideal pH of coffee is between 6.5 to 7.5. Therefore, choice D is correct.