Assertion :Intercalary meristem increases length of plant like apical meristems. Reason: Intercalary meristem originates from the apical meristems.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Assertion is incorrect but Reason is correct.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Intercalary meristems are present in stems at the base of nodes and leaf blades. Cells of such meristems can divide and form new cells. If the tip of the plant is removed then the intercalary meristem form new cells and increases plant growth. Intercalary meristem divides and provides an increase in the length of the internode. When root or shoot grows in length some apical meristem leaves some meristematic cells behind at the node. Such meristems are called as intercalary meristems. They possess the same capacity as apical meristems. Therefore, both assertion and reason are correct.

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Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

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