A: Chitinous exoskeleton is a characteristic | vedclass

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(C) Assertion is true: The presence of a chitinous exoskeleton is a defining characteristic of the phylum $Arthropoda$.Reason is false: The chitinous

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Assertion is correct,but Reason is incorrect.

Vedclass · Answer

(C) Assertion is true: The presence of a chitinous exoskeleton is a defining characteristic of the phylum $Arthropoda$.Reason is false: The chitinous exoskeleton is impermeable to water. It serves as a protective covering that prevents desiccation (water loss) and does not allow the diffusion of water vapour from the atmosphere into the body or vice-versa.Therefore,the Assertion is true but the Reason is false.

$A$: Chitinous exoskeleton is a characteristic feature of arthropods.
$R$: It allows diffusion of water vapour from atmosphere to the body.

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$A$: Chitinous exoskeleton is a characteristic feature of arthropods.$R$: It allows diffusion of water vapour from atmosphere to the body.