Improvements in Food Resources

Science for Ninth Class (Part-3)

Science for Ninth Class (Part-3)

Dr. P. S. Verma, My Study Gear, S. Chand

1.
Define crop? Name the various types of crops.
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Crop is a commercial plant that is cultivated on a large sca...
2.
Describe the mechanism of crop variety improvement.
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Crop variety improvement Is manipulation of crop plants for ...
3.
How are minerals replenished in the soil of a crop field?
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In the crop fields, minerals in soil are replenished through...
4.
What is organic farming? What are its advantages?
5.
What is irrigation? Discuss the various methods of irrigation.
6.
Describe the various cropping patterns.

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