Class 8 Science - Chapter Crop Production and Management NCERT Solutions | Select the correct word from the followi
Select the correct word from the following list and fill in the blanks.
float, water, crop, nutrients, preparation
(a) The same kind of plants grown and cultivated on a large scale at a place is called _____________.
(b) The first step before growing crops is _____________ of the soil.
(c) Damaged seeds would _____________ on top of water.
(d) For growing a crop, sufficient sunlight and _____________ and _____________ from the soil are essential.
(a) Crop
Crop may be defined as the same kind of plants that are grown on the large scale.
(b) Preparation
Before growing crops, preparation of soil is done. In this process, turning and loosening steps of the soil is done. It allows the roots to penetrate deep into the soil.
(c) Float
The damaged seeds are light in weight. That is why they float on water whereas the fresh seeds are heavy in weight so they easily settle down in the bottom.
(d) Water and nutrients
For a health crop, we need a proper sunlight, water and nutrients. If the deficiency of these things occurs then the crop should be weak.
More Questions From Class 8 Science - Chapter Crop Production and Management
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Arrange the following boxes in proper order to make a flow chart of sugarcane crop production.
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Complete the following word puzzle with the help of clues given below.
Down
1. Providing water to the crops.
2. Keeping crop grains for a long time under proper conditions.
5. Certain plants of the same kind grown on a large scale.Across
3. A machine used for cutting the matured crop.
4. A rabi crop that is also one of the pulses.
6. A process of separating the grain from chaff.
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If wheat is sown in the kharif season, what would happen? Discuss.
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Write a paragraph in your own words on each of the following.
(a) Preparation of soil (b) Sowing
(c) Weeding (d) Threshing - Q:-
Explain how fertilisers are different from manure.
- Q:-
Match items in column A with those in column B.
A B
(i) Kharif crops (a) Food for cattle
(ii) Rabi crops (b) Urea and super phosphate
(iii) Chemical fertilisers (c) Animal excreta, cow dung urine and plant waste
(iv) Organic manure (d) Wheat, gram, pea
(e) Paddy and maize - Q:-
Give two examples of each.
(a) Kharif crop
(b) Rabi crop - Q:-
Explain how soil gets affected by the continuous plantation of crops in a field.
- Q:-
What is irrigation? Describe two methods of irrigation which conserve water.
- Q:-
What are weeds? How can we control them?
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Fill in the blanks
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