Answer:
(i) Kharif crops is grown during the month from June to October. (1)
(ii) Four factors for which crop variety improvement is done are as follows.
(a) Higher yield To increase the productivity of crop per acre.
(b) Improved quality N Quality consideration such as baking quality, protein quality, oil quality and preserving quality of crop products vary from product crop to crop.
(c) Biotic-abiotic resistance N Crop on production can go down due to bioric and abioric stresses under different situations. (2)
(d) Change in maturity duration N The shorter the duration of the crop from sowing to harvesting, the more economical is the variety. (2)
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