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NEETBotanyAnatomy of Flowering Plants

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In a dicotyledonous stem, the innermost layer of the cortex is often referred to as the starch sheath. Reason (R): The cells of the endodermis in a dicotyledonous stem contain abundant starch grains. In the light of the above statements, choose the most appropriate answer from the options given bel

Options

  1. ABoth Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
  2. BAssertion (A) is true but Reason (R) is false.
  3. CBoth Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
  4. DAssertion (A) is false but Reason (R) is true.

Correct answer

C. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Step-by-step solution

In a dicotyledonous stem, the cortex consists of three sub-zones: the outer hypodermis, the middle cortical layers, and the innermost layer called the endodermis. The cells of the endodermis are rich in starch grains, and because of this characteristic feature, the layer is also referred to as the starch sheath. Thus, both Assertion (A) and Reason (R) are true, and Reason (R) correctly explains why the innermost layer of the cortex is called the starch sheath. Answer: Both Assertion (A) and Reason (R) are true and

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