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Question
Animals having multiple or numerous setae are included under
Animals having multiple or numerous setae are included under
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Solution
The correct option is D Polychaeta
Polychaetes belong to class Annelida and they are known as segmented worms. Each segment bears a pair of paddle-like and highly vascularized parapodia, which bear many bristles, called as chaetae, which are made of chitin that is used for movement and in many species, act as the worm's primary respiratory surfaces. Bundles of bristles called as setae project from the parapodia. So, the correct answer is option A.
Polychaetes belong to class Annelida and they are known as segmented worms. Each segment bears a pair of paddle-like and highly vascularized parapodia, which bear many bristles, called as chaetae, which are made of chitin that is used for movement and in many species, act as the worm's primary respiratory surfaces. Bundles of bristles called as setae project from the parapodia. So, the correct answer is option A.
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