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In which of the following segments, setae are present?(a) First segment(b) Second segment(c) Clitellar segments(d) Last segmentThe question was posed to me during an online exam.My question is taken from Animals in section Structural Organisations in Animals of Biology – Class 11

Answer»

Correct option is (b) SECOND segment

Easy EXPLANATION: In each body segment, except the FIRST, LAST and clitellum, there are rows of S-shaped setae, embedded in the epidermal pits in the middle of each segment. Setae can be extended or retracted. Their principal role is in LOCOMOTION.



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