Question

Give scientific reason of the following: (ANY TWO) 4

1) Rearing of sheep is a livestock.*

2) Leaves of plants fall off in a particular season.

3) Fruits, flowers fall off after a certain period of time.​

Answer 1

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᠉ Rearing of sheep is a livestock :

➙ Sheep provide us food , we can be consumed by us or it can be sold in the market to earn money . ( meat and milk )

➙ Moreover it provides wool which is most widely used animal fibre .

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᠉ Leaves of plants fall off in a particular season :

➙ Leaves of plants usually fall in autumn . Autumn precedes the advent of winter which is a dry season with fewer water supplies for plants . The plants shed off thier leaves at the beginning of autumn to prepare themselves for the upcoming winter .

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᠉ Fruits, flowers fall off after a certain period of time.

➙ Fruits and flowers are the excretory waste of plants . They fall of due to the action of phytohormone called abscisic acid .

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