Biology, asked by cprincy2018, 1 year ago

class 9 important questions comes in periodic test 2 subjest biology cell ,tissues,improvement in food resources


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Answers

Answered by yogitagautam72
1
  Food supplies proteins, carbohydrates, fats, vitamins and minerals, all of which we require for body development, growth and health.

•  Different crops require different climatic conditions, temperature and photoperiods for their growth and completion of their life cycle. Photoperiods are related to the duration of sunlight. Growth of plants and flowers are dependent on sunlight.

•  Successful crop production depends upon many factors such as:

    (i) Understanding how crops grow and develop.

    (ii) Effect of various nutrients, climate, water on the growth of the plant.

    (iii) Modification and management of each factor for increasing the yield of the crop.

•  The crops which are grown in rainy season (the kharif season, from June to October) are called as kharif crops.

    Example: Paddy, soyabean, pigeon pea, maize, cotton, green gram and black gram are kharif crops.

I hope it help you
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