Question

Consider the following statements.
Assertion (A): Bilaterally symmetrical animals are more efficient than other animals in seeking food, locating the mate, escape from enemies etc.
Reason (R): Cephalisation. The correct answer is

• A. Both (A) and (R) are true, (R) is the correct explanation of (A)
• B. Both (A) and (R) are true, (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:

Cephalisation provides a head with complex sense organs, allowing for quick and accurate assessment of the environment during forward movement.

Answer 1

The Correct Option is A

Concept: Bilateral symmetry and Cephalisation are linked evolutionary traits that provide advantages in motility and sensory perception.
Explanation: Bilateral symmetry allows for directional movement. This movement is maximized by Cephalisation, the concentration of nervous tissue and sense organs at the leading (anterior) end, which makes the animal more efficient at interacting with its environment.