2015 JAMB Agriculture Past Questions & Answers - page 1

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1
The process of grafting in crop production involves

A
The fusion of gametes of two crops
B
Inducing rooting from stems
C
The transfer of a bud from one crop to another
D
The joining of two parts from related crops.

Correct Option: D

No further explanations yet...

2
If the recommended spacing for a tree crop is 2.5cm by 4.0m determine the number of seedlings required to plant a 2-hectare farmland.

A
1,000
B
2,000
C
10,000
D
20,000

Correct Option: B

Solution
No of seedling
= (Area of land)/(Area of crop)
= (2 ×10,000)/(2.5 ×4)
= 2,000 seedlings

3
A regulatory control of diseases in crop production is

A
roughing
B
quarantine
C
crop rotation
D
Soil tillage.

Correct Option: B

Solution
Option B is correct as Quarantine involves isolation to prevent control disease.

4
Which of the following statements about soil organisms is false?

A
Soil pH will affect the population of soil organisms
B
Population of soil living organisms is increased with increase in soil organic matter
C
Soil with good texture and structure cannot harbour soil microbes
D
Soil temperature affects the activities of soil organisms.

Correct Option: A

No further explanations yet...

5
The data for feed consumption and weighing gain of four farm animals labelled P, Q, R and S are shown below.
P -50kg feed consumed and 20kg weight gained Q -90kg feed consumed and 30kg weight gained R -100kg feed consumed and 25kg weight gained S - 150kg feed consumed and 30kg weight gained.


Which of the following must efficient feed converter?

A
P
B
Q
C
R
D
S

Correct Option: A

Solution
FCR for P = 20/50=2/5=0.4
FCR for Q = 30/90=1/3=0.33
FCR for R = 25/100=1/4- 0.25
FCR for S = 30/150=1/5=0.2

Option A is correct because P has the highest FCR

6
In preparing for parturition of a sow, warmth should be provided to

A
Promote growth of hair of the young
B
make the young suckle colostrum's
C
prevent anaemia in the young
D
prevent chilling of the young.

Correct Option: D

Solution
Option D is correct as the young need warmth to avoid cold.

7
In which layer of the soil profile do most biological activities occur?

A
D-horizon
B
C-horizon
C
B-horizon
D
A-horizon

Correct Option: D

Solution
Option D is correct as this A-horizon contains most minerals and organic matter.

8
Which of the following statements about agricultural development are true? It leads to

I. increased processing of produce
II. Increased food production.
III. High productivity.
IV. Increased agricultural labour force.

A
I, II and III only
B
I, II and IV only
C
I, III and IV only
D
II, II and IV only

Correct Option: A

Solution
Option A is correct because agricultural development entails employing diverse means, through mechanization and new innovations and also government policies to boost agricultural production.

9
Under the communal land tenure system, farmers find it difficult to secure loans because

A
land holdings are small and fragmented
B
they are poor
C
land holdings cannot be used as security
D
they are mostly illiterate.

Correct Option: C

Solution
Option C is correct because in communal land system, land is owned/ allocated to a community and not individual.

10
Pineapple is widely propagated using

A
seeds
B
suckets
C
Slips
D
cuttings

Correct Option: B

Solution
Option B is correct because the sucker is the reproductive part of a pineapple.

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