Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R) : In the light of the above statements, choose the correct answer from the options given below :
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Both A and R are true and R is the correct explanation of A
Answer
(4) Both A and R are true and R is the correct explanation of A
Solution
In winter the cambium is less active and forms fewer xylary elements that have narrow vessels; this wood is called autumn wood or late wood.
So the Assertion is true, the Reason is true, and the low activity of cambium in winter is the cause of late wood having fewer, narrow-vesselled xylary elements.
Answer: (4)