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Assertion : Plants usually bend towards ...

Assertion : Plants usually bend towards the source of light
Reason :Shoot apex shows positive phototropism because of differential growth caused due to unequal distribution of auxin.

A

If both Assetion and Reason are true and the Reason is a correct explanation of the Assertion

B

If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion

C

If Assertion is true but the Reason is false

D

If both Assertion and Reaon are false

Text Solution

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The correct Answer is:
A
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Assertion : Plants bend towards the light. Reason: This is due to unequal distribution of auxins on illuminated and darker side of stem.

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Assertion :- Environmental signals such as light and gravity also affect certain phases or stages of growth Reason:- Gravity and light leads to differential auxin concentration which is responsible for differential growth.