Agriculture MCQ with Explaination Important For Competitive Exams Part-1

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Agriculture MCQ

Q) In cabbage, cauliflower and broccoli, hollow stems with darkened interiors are most often caused by? (Agriculture MCQ)

[1] Calcium deficiency

[2] Chilling temperatures

[3] Boron deficiency

[4] Magnesium deficiency

[5] Zinc deficiency

[Answer] : [3] Boron deficiency

[Explanation]
Hollow stem resulting from boron deficiency can be controlled by soil (preferably) or foliar application of low rates of boron. Boron deficiencies are more common on sandy soils and may be detected in a soil test. Be careful not to over apply boron as high rates can cause toxicity – cupping and scorching of leaves.Hollow stem of cole crops. is a condition of cabbage, cauliflower, and broccoli, which may occur during very rapid growth. (Agriculture MCQ)

Q) During which season would the Aquaculturist be most likely to aerate (add oxygen to) a pond?

[1] Summer

[2] Fall

[3] Spring

[4] Winter

[5] Autumn

[Answer]: [3] Spring

[Explanation of Agriculture MCQ]
Hollow stem resulting from boron deficiency can be controlled by soil (preferably) or foliar application of low rates of boron. Boron deficiencies are more common on sandy soils and may be detected in a soil test. Be careful not to over apply boron as high rates can cause toxicity – cupping and scorching of leaves. Hollow stem of cole crops. is a condition of cabbage, cauliflower, and broccoli, which may occur during very rapid growth. (Agriculture MCQ)

Q) Which of the following silicate minerals are formed by parallel sheets of silicate tetrahedra with Si2O5 or a 2:5 ratio?

[1] Ortho silicate

[2] Neo Silicate

[3] Phyllosilicate

[4] Sheet silicate

[5] Both 3 & 4

[Answer]: [5] Both 3 & 4

[Explanation of Agriculture MCQ]
Phyllosilicates are sheet Silicate minerals, formed by parallel sheets of silicate tetrahedra with Si2O5 or a 2:5 ratio. The phyllosilicates, or sheet silicates, are an important group of minerals that includes the micas, chlorite, serpentine, talc, and the clay minerals. (Agriculture MCQ)

Q) The nearly constant rate of infiltration that develops after some time has elapsed from the start of irrigation
is termed as?

[1] Infiltration rate
[2] Infiltration velocity
[3] Basic Infiltration rate
[4] Constant infiltration velocity
[5] None of the above

[Answer]: [3] Basic Infiltration rate

[Explanation of Agriculture MCQ]

The infiltration rate decreases during irrigation. The rate of decrease is rapid initially and the infiltration rate
tends to approach a constant value. The nearly constant rate that develops after some time has elapsed from
the start of irrigation is called the basic infiltration rate. (Agriculture MCQ)

Agriculture MCQ

Q) The disc angle of a disc plough ranges from?
[1] 40-45 degree
[2] 30-35 degree
[3] 20-25 degree
[4] 45-50 degree
[5] None of the above

[Answer]: [1] 40-45 degree

[Explanation of Agriculture MCQ]

The disc angle ranges from 40-45 degree to obtain the desired width of cut. (Agriculture MCQ)

Q) Loose Droppings that stick to the feathers around the vent area in birds is known as?
[1] Pasty butt
[2] Pasting
[3] Paste up
[4] Pasted vent
[5] All of the above

[Answer]: [5] All of the above

[Explanation of Agriculture MCQ]

Pasting/Pasty Butt – are loose droppings that stick to the feathers around the vent area. This must be cleaned
off or the chick or chicken could die. A warm bath will make the process of cleaning easier. For chickens with
a lot of feathering in this area such as Orpingtons, one can trim those feathers to prevent a repeat episode.
This is a common ailment in shipped chicks. The main cause in the case of shipped chicks is stress. Plain yogurt
with live bacteria will help with this, or add Pure Apple cider vinegar to their water -1 Tablespoon to a gallon
of water. Also known as “pasty butt,” “pasted vent” or “pasting up”, the condition is common in baby chicks,
and not typically seen in adult birds, although adults can be affected. (Agriculture MCQ)

Q) Which of the following actions have to be avoided to prevent the depletion of DO (dissolved oxygen) in aquaculture?

[1] Over-aerating, over-warming, over-harvesting
[2] Over-seining, over-planting, over-medicating
[3] Over-feeding, over-stocking, over-fertilizing
[4] None of these
[5] All of the above

[Answer]: [3] Over-feeding, over-stocking, over-fertilizing

[Explanation of Agriculture MCQ]

Over-fertilizing causes organic pollution, Over-stocking causes competition for DO and nutrients, Over-feeding
causes pollution and bacterial growth; So, these 3 actions must be avoided in aquaculture.

Q) Why must one control green plant growth in aquaculture or fish farming?
[1] Plants compete with fish for available DO
[2] Plants compete with fish for available O2
[3] Plants compete with fish for available CO2
[4] All of these
[5] None of the above

[Answer]: [1] Plants compete with fish for available DO

[Explanation of Agriculture MCQ]

Dissolved Oxygen is the amount of gaseous oxygen, dissolved in the water. Oxygen enters the water by direct
absorption from the atmosphere, by rapid movement, or as a waste product of plant photosynthesis. Water
temperature and the volume of moving water can affect dissolved oxygen levels. Control plant growth,
remembering that in the absence of sunlight aquatic green plants compete with crop species for available DO
(dissolved oxygen). (Agriculture MCQ)

Q) What is the threshold for water indicating scarcity in cubic meters per capita per annum as per UNDP?
[1] 500
[2] 1000
[3] 1500
[4] 1200
[5] None of the above

[Answer]: [2] 1000

[Explanation of Agriculture MCQ]

Occurrence of water availability at about 1000 cubic meters per capita per annum is a common threshold for
water indicating scarcity (UNDP). ( Agriculture MCQ )

Q) Practice of forestry with the object of raising flowering trees and shrubs mainly to serve as recreation forests for the urban and rural population, is known as?
[1] Recreation forestry
[2] Extension forestry
[3] Farm forestry
[4] Mixed forestry
[5] All of these

[Answer]: [1] Recreation Forestry

[Explanation of Agriculture MCQ]

Farm Forestry: Farm forestry is the name given to programmes which promote commercial tree growing by
farmers on their own land. Farm forestry was defined by NCA (1976) as the practice of forestry in all its aspects
in and the around the farms or village lands integrated with other farm operations. ( Agriculture MCQ )

Extension Forestry: It is the practice of forestry in areas devoid of tree growth and other vegetation situated
in places away from the conventional forest areas with the object of increasing the area under tree growth.
Recreation Forestry: It is the practice of forestry with the object of raising flowering trees and shrubs mainly
to serve as recreation forests for the urban and rural population. This type of forestry is also known
as Aesthetic forestry which is defined as the practice of forestry with the object of developing or maintaining
a forest of high scenic value. ( Agriculture MCQ )

Agriculture MCQ with Explaination Important For Competitive Exams Part-2

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