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Water Management

Irrigation se...

Question

Irrigation serves the following purposes except:

A

Provides moist conditions for seeds to germinate.

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B

It reduces yield by water logging the fields.

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C

Nutrients dissolved in water get transported to each part of the plant body.

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D

Water prevents crop from frost and hot air currents.

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Solution

The correct option is B It reduces yield by water logging the fields.
Water logging is a problem in fields which experience floods. Irrigation is a controlled supply of water to the fields for making up the deficiency of water (in case of lack of natural moisture in soil.)

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Similar questions

Q. Read the statements given below and choose the correct statements.
(i) Seeds require moisture for germination.
(ii) Plants can absorb nutrients mostly in dissolved form.
(iii) Irrigation protects the crops from both frost and hot air currents.
(iv) Irrigation improves soil texture.
Choose the combination of statements which indicate the need to irrigate crops.

Q. Water can protect the crop from both frost and hot air currents.

Q. Read the following statements.

(i) Irrigation protects the crops from both frost and hot air currents.
(ii) Plants can absorb nutrients mostly in dissolved form.
(iii) Excessive use of chemical fertilizers disturbs the balance of nutrients in the soil.
(iv) The process of loosening and turning the soil is called digging(or leveling)
(v) Rabi crops, such as paddy, require a lot of water and therefore they are sown at the beginning of the south-west monsoon, during June or July.

Select the incorrect combination of statements.

Q. Read the given paragraph where few words have been italicised. Preparation of soil in a field, before sowing of seeds involved two steps :-
Broadcasting and levelling . Soil in the crop field is enriched with nutrients by adding manures and fertilizers to it. Crop fields need to be irrigated from time to time . In Sprinkler system of irrigation water is allowed to fall drop by drop from a pipe just near the plant roots. Where as in drip irrigation water escapes from a revolving nozzle. Weeding in crop - fields can be done using plough. After the crop is harvested, the grain is separated from cut crop using a machine called harvester . Select the correct option regarding these.

Q. Which part of the plant absorbs water and nutrients from the soil and transports it to the other parts?

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