| Read the assertion and reason carefully: |
| Assertion : The period between the appearance of two leaf primordial is called plastochrons. |
| Reason : Leaf-primordia develop below the shoot apex. |
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: B
Solution :
Leaf primordia are produced periodically on the flanks. The period between the appearance of two successive leaf primordia is called plastochron. The shoot apex is the terminal part of the shoot which is immediately above the youngest leaf primordium.
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