JAMB - Agricultural Science (2019)

1
Which of the following cereal crops most requires nursery practices?
Answer
(B)
Rice
2
The maturity period of groundnut in month is
Answer
(C)
4 - 5
3
Oil palm trees do well in soils with pH level of
Answer
(C)
5.5 - 6.5
4
The optimum temperature for storing yam tuber under cold storage is
Answer
(A)
7°C
5
Dura, Tenera and Pisifera are all cultivated varieties of
Answer
(B)
oil palm
6
Dura, Tenera and Pisifera are all cultivated varieties of
Answer
(D)
oil palm
7
The non-oil crop among the following is
Answer
(D)
cowpea
8
A variety of oil palm is
Answer
(C)
Tenera
9
Fertilizer application in maize should be completed before
Answer
(D)
Knee high stage
10
Ideal pH for coffee cultivation is
Answer
(D)
6.5 - 7.5
11
Which of the following nutrient is highly immobile in plants?
Answer
(A)
B
12
Blast of rice is a
Answer
(C)
Fungal disease
13
A soil may be called as alkaline when the pH of the soil is more than
Answer
(C)
7.0
14
Which of the following requires Silicon (Si) for its growth?
Answer
(C)
Rice
15
Phalaris minor is a crop associated wood with crop
Answer
(A)
Wheat
16
What is crop rotation?
Answer
(A)
Growing of crops one after the other in a particular sequence
17
The main mode of infection of rinderpest disease in cattle is through
Answer
(D)
inhalation
18
The pox disease in livestock are caused by
Answer
(B)
viruses
19
In poultry nutrition, the minerals that prevent the laying of thin-shelled eggs are
Answer
(A)
calcium and phosphorus
20
In animal nutrition, iodine is essential for the production of
Answer
(B)
thyrozine
21
The process of mating in sheep is termed
Answer
(C)
tupping
22
Fertilizers are applied to fishponds to serve as
Answer
(C)
nutrients for plankton
23
Which of the following is not a breed of rabbits?
Answer
(B)
Land race
24
Which of the following is not a part of the reproduction system of a hen?
Answer
(D)
ureter
25
A good silage should be free of
Answer
(A)
moulds
26
The most unreliable source of power on the farm is
Answer
(B)
wind
27
The farm machinery used to sow seeds and apply fertilizer at the same time is
Answer
(C)
ploughing
28
Which of the following is not a source of farm power?
Answer
(D)
Plough
29
Farm survey equipment include the following except
Answer
(C)
datun
30
Which of the following required daily checking in a tractor?
Answer
(B)
Engine oil
31
In order to eliminate food shortage, farm as should
Answer
(A)
cultivate more varieties of crops
32
The following are importance of agriculture except
Answer
(C)
Lack of good food
33
The following are the features of subsistence agriculture except
Answer
(D)
It requires the use of both skilled and unskilled labour
34
Which of the following is a type of land tenure system?
Answer
(A)
Freehold system
35
Which of the following is not a branch of agriculture?
Answer
(C)
Kidding
36
The demand for agricultural produce is generally
Answer
(B)
inelastic
37
Rural farmers mostly obtain loans from
Answer
(D)
Money Lenders
38
The type of labour available to peasant farmers is
Answer
(A)
family labour
39
The factor of production whose reward is profit is
Answer
(D)
entrepreneurship
40
The wear and tear of farm structures over time is described as
Answer
(B)
depreciation
41
Soil texture can be refered to as
Answer
(C)
Distribution of the different sizes of soil particles
42
Which one of the following i not a target group of an agricultural Extension agent
Answer
(D)
Political parties
43
All but one are qualities of a good extension worker
Answer
(D)
Involvement in local politics
44
Which one of these is not part of a disc plough
Answer
(A)
Planter
45
One major difference between disc plough and disc Harrow is
Answer
(A)
Disc plough is used to create wider ridges on the field than disc Harrow
46
A castrated cockerel is called?
Answer
(C)
Capon
47
New Zealand is a breed of which animal?
Answer
(D)
Rabbit
48
Newcastle disease is viral diseases that affect which animals?
Answer
(A)
Poultry birds
49
All are factors to consider when planning a farmstead except?
Answer
(D)
Irrigation
50
Legumes are different from grasses, because;
Answer
(B)
They form symbiotic relationship with bacteria, rhizobian, in the nodules of their roofs
51
In which of the soil layer does most biological activity occur?
Answer
(D)
A - horizon
52
All but one are related to surface irrigation?
Answer
(D)
Check flooding
53
All but one are related to surface irrigation?
Answer
(D)
Check flooding
54
The most effective method of controlling or preventing viral diseases in plants is by
Answer
(C)
planting resistant varieties
55
Reduction of ten seedlings of maize to two per stand is referred to as
Answer
(A)
Thinning
56
The causative organism of maize rust is?
Answer
(D)
Fungus
57
Which of the following fruit is a capsule?
Answer
(A)
Okra
58
The Head of the tapeworm is known as the
Answer
(C)
scolex
59
Crops grown primarily for feeding animals are known as
Answer
(B)
forage
60
Which of the following is not a sign of heat in animals?
Answer
(A)
Mucous discharge from the rectum
61
The incubation period for turkey is
Answer
(C)
32 days
62
Which of the following is not a source of farm credit
Answer
(A)
Mortgage banks
63
Increase in farm produce is not usually improved by the
Answer
(C)
Improved sales of crop and livestock
64
The commonest method of land tenure in Nigeria is
Answer
(D)
Inheritance
65
If a crop requires 1.5kg phosphorus per hectare, how many kg of manure will be required per hectare is 1kg manure contains 0.32kg of phosphorus
Answer
(B)
4.69kg
66
The process whereby rocks are broken down into small particles through both physical and chemical factors is known as
Answer
(B)
Weathering
67
The parent material of a soil is formed from the disintegration of
Answer
(D)
Rock
68
The following are the advantages of the sprinkler method of irrigation except
Answer
(D)
The method may be difficult for local farmers to use
69
Which one of these is not an advantage of Newspaper as agricultural extension teaching methods?
Answer
(A)
It is restricted to only few literate farmer
70
The degree of responsiveness of demand to change in the price of goods or produce is referred to as
Answer
(C)
Price Elasticity of demand
71
Which one of these is not a factor that affect change in supply of agricultural produce
Answer
(D)
Fixed cost
72
The part of the ruminant stomach from which digestive juices secreted is the
Answer
(C)
Abomasum
73
One of the symptoms of vitamin deficiency diseases in livestock includes except
Answer
(A)
Improved fertility
74
Some of the by-products of fish include the following except
Answer
(B)
Leather
75
A crop not requiring more than 750mm annual rainfall is most suitable for cultivation in
Answer
(B)
Sahel savanna