Biology · Plant Transport Mechanisms
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Xylem conduction is strictly unidirectional in intact plants. Reason (R): Absence of protoplasm in mature xylem vessels prevents reversal of flow. Choose the correct answer from the options given below:
- 1A is false, but R is true
- 2A is true, but R is false
- 3Both A and R are true but R is NOT the correct explanation of A✓
- 4Both A and R are true and R is the correct explanation of A
Correct answer
Both A and R are true but R is NOT the correct explanation of A
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