Agriculture - General Knowledge Questions and Answers

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Drip irrigation is not suitable for?

A)
Fruit farms

B)
Horticulture

C)
Paddy fields

D)
Floriculure


Correct Answer :

Black colour absorbs heat quickly


Explanation :

Paddy, also called rice paddy, small, level, flooded field used to cultivate rice.

Instrument used to measure the purity of milk is?

A)
Hydrometer

B)
Barometer

C)
Lactometer

D)
Anemometer



Explanation :

A lactometer is an instrument that is used to check for the purity of milk by measuring its density.
An instrument to find out the content of the water in the milk or to test the richness of the milk is thus termed as 'lactometers'. The lactometer works on the principle of gravity of milk.

Excellent timber producing tree is?

A)
Teak

B)
Sal

C)
Haldu

D)
Babool


Correct Answer :

Teak


Explanation :

teak is durable and fire-resistant. It can be easily seasoned and worked. It is among the most valuable timber trees of the world and its use is limited to superior work.

If the pH of a soil sample is 4, which of the following substance can be added to help the growth of plants?

A)
Calcium chloride

B)
Calcium oxide

C)
Urea

D)
Organic matter


Correct Answer :

Calcium oxide


Explanation :

A neutral solution has pH 7; a lower pH means that the solution is acid and a higher pH that it is alkaline.

Calcium oxide, CaO is known as unslated lime, burnt lime and quicklime. It is manufactured by roasting calcitic limestone in a furnace.
It added in the soil for the purpose of reducing soil acidity.

Which of the following reproduces from underground stem?

A)

Radish


B)

Potato


C)

Carrot


D)

Sweet potato



Correct Answer :

Potato


Explanation :

Potato is a stem vegetable. The potatoes grow on underground stem.
The potato tubers are actually thickened stem they have buds that sprout stem and leafs. Roots can’t do that.

Which gas is fixed by Rhizobium bacteria present in the root nodules of a pea plant ?

A)

Nitrogen


B)

Carbon dioxide


C)

Oxygen


D)

Helium



Correct Answer :

Nitrogen


Explanation :

Rhizobia forms a symbiotic relationship or nodules in the roots systems of legumes such as soybean, pea, clover alfalfa etc. These bacteria take nitrogen from the air and “fix” or concentrate it in pink root nodules, adding nitrogen to the soil in a form the plants can absorb thus eliminating the need of nitrogen fertilization.

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