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BIOLOGY

JAMB 2013 - Question 6

Biology 2013 JAMB Past Questions - Question 6: The structure labelled II is the .

use the diagram below to answer the questions 6 and 7

The structure labelled II is the .

A: cocoon.

B: clitellum.

C: chaetae.

D: spermathecal pore

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Correct Answer

Explanation

Chtellum is a glandular swelling found on segments 32 to 37of an earthworm. It secretes egg case, called cocoon and thick mucous whichglue two earth worms together during mating. Chaetae or bristles arepaired'legs found on the under surface or ventral surface for crawling.Spermatheca! pore is an opening into sperm storing bagcalled spermatheca. The structure labelled III is genital aperture.