Question

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Over watering is very harmful to chrysanthemum plants, hence proper drainage in the field and pots should be maintained for commercial cultivation.
Reason (R) : Over watering causes yellowing of leaves and mortality of chrysanthemum plants due to insufficient supply of oxygen for root respiration resulting in rotting of roots.
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A).
• B. Both (A) and (R) are correct but (R) is NOT the correct explanation of (A).
• C. (A) is correct but (R) is not correct.
• D. (A) is not correct but (R) is correct.

Hint:

Plant roots need oxygen!
Overwatering fills soil pores with water, pushing out air (oxygen).
Lack of oxygen damages roots (they can't "breathe") and leads to root rot.
Damaged roots can't supply the plant, causing yellow leaves and death. This is why good drainage (Assertion) is crucial, due to the reasons mentioned (Reason).

Answer 1

The Correct Option is A

Step 1: Overwatering fills soil air spaces, starving chrysanthemum roots of oxygen (A is a valid practical concern).
Step 2: Oxygen starvation stops root respiration, causing root rot and leaf yellowing (this is exactly what R states).
Step 3: R is the direct mechanism behind why drainage is recommended in A, so R explains A.
Step 4: Correct option: \( \boxed{\text{Both (A) and (R) are correct and (R) is the correct explanation of (A)}} \).