Question

C Give reasons for the following:
1. Seeds should be sown at the right depth.
2. It is important to irrigate the fields.
3. Fruits, vegetables and grains should be thoroughly washed before use
4. Farmers prefer to grow leguminous crops alternatively with cereal crops in their
fields.
5. Manure is slowly absorbed by plants.
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Answer 1

Answer:

1. because seeds sown at right depth willnot be eaten by birds and it will be a correct place for a plant to grow and will get sunlight and other nutrients.

2. yes it is important to irrigate the fields  for their growth and irrigation will not let the crops to die.

3. as if they should not be washed the chemicals used for their making process, will be eaten by us.. it will lead to have a negative results on our body.

4.because there is a presence of microorganism called rhizobium in the roots of leguminous plant and they help in fixing of nitrogen in soil.

5.manure is an organic substance which is prepared by decomposition process and done by fungus,microbes,etc.it is slowly absorbed by plants..

Explanation:

Answer 2

this photo will help you