Question

Assertion and reason type question from biology of class 9.


Ye bhi le le✌️✌️✌️✌️​

Answer 1

Answer:

to assert, Affirm, maintain, vindicate. To assert is to fasten to one's self, and hence to claim. It is, therefore, adversative in its nature. We assert our rights and privileges, or the cause of tree institutions, as against opposition or denial. To affirm is to declare as true.

Answer 2

Explanation:

Q.Assertion and reason type question from biology of class 9.:-

Given below are assertion and reason. Point out if both true with reason being correct explanation (A), both true but reason not correct explanation (B), assertion true but reason is wrong (C), both are wrong (D)

Ans:-

Collenchyma tissue is composed of elongated cells with irregularly thickened walls. They provide structural support, particularly in growing shoots and leaves. Collenchyma cells are usually living, and have only a thick primary cell wall made up of cellulose and pectin. Cell wall thickness is strongly affected by mechanical stress upon the plant. So, the correct answer is 'A.'

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