Question

Assertion (A): Whittaker proposed a five kingdom classification based on many criteria.
Reason (R): This is due to the understanding of the different scientists differently over time.
Identify the correct option from the following:

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

Hint:

In assertion-reason questions, both statements must be independently evaluated first. Only then assess if the reason logically explains the assertion.

Answer 1

The Correct Option is A

Step 1: Analyze Assertion (A)
Whittaker’s five kingdom classification considered multiple criteria such as cell structure, mode of nutrition, reproduction, and phylogenetic relationships. So, the assertion is correct. Step 2: Analyze Reason (R)
The evolution of classification systems was influenced by changing scientific understanding. Different scientists proposed different systems over time as their knowledge evolved. Hence, the reason is also correct. Step 3: Examine the explanation relationship
The reason accurately explains why Whittaker introduced his classification — the need to synthesize various evolving criteria into a comprehensive system.