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In the following questions, a statement of assertion (A) is followed by a statement of reason (R)
(1) If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark A
(2) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark B
(3) If Assertion is true statement but Reason is false, then mark C
(4) If both Assertion and Reason are false statements, then mark D
Assertion: Chitinous hairlike extensions, anchored in the skin and projecting from the cuticle, called chaetae, are present in every segment in most groups.
Reason: The chaetae are a defining character of annelids.
A
B
C
D
Answers (1)
The skin of annelids is protected by a cuticle that is thinner than the cuticle of the ecdysozoans and does not need to be molten for growth. Chitinous hairlike extensions, anchored in the skin and projecting from the cuticle, called chaetae, are present in every segment in most groups. The chaetae are a defining characteristic of annelids. Polychaete worms have paired, unjointed limbs called parapodia on each segment used for locomotion and breathing. Hence, the correct answer is option 1.
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