Question

Due to the presence of clitellum earthworm body is divided into three. What are they?

Answer 1

The clitellum is a thickened glandular and non-segmented section of the body wall near the head in earthworms and leeches, that secretes a viscid sac in which the eggs are deposited. It is located near the anterior end of the body. Its main function is to store the eggs of the worm.

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Answer 2

Answer:

The segments 14-16 are covered by a prominent dark band of glandular tissue called clitellum. Thus the body is divisible into three prominent regions – preclitellar, clitellar and postclitellar segments

Explanation:

• The non-segmented portion of the earthworm's body that is close to its anterior end is where you may find it.
• Earthworms are terrestrial invertebrates that are part of the phylum Annelida's clitellata class. They are frequently found in soil and eat a wide range of organic debris, including nematodes, bacteria, fungus, live protozoa, rotifers, plant material, and other microorganisms. Their internal segmentation corresponds to the exterior segmentation of their body.
• The earthworm's clitellum is a component of its reproductive system. It is a substantial saddle-shaped ring that is present in the worm's epidermis. At the front of the body, close to the head, there is a non-segmented glandular region. In a viscid sac that it secretes, eggs are kept. It is specifically situated between the body's fourteenth and seventeenth segments.
• Only sexually developed worms can view the clitellum, which certain annelids employ for sexual reproduction. It might be orange-red, reddish-brown, or white in colour. The earthworm is prepared to mate when the clitellum is orange. To create a cocoon for its eggs, Clitellum secretes a viscous fluid. The mouth and buccal cavity, which run through the first one or two segments, the pharynx, which is about four segments long, the oesophagus, crop, gizzard, and the intestine make up the earthworm's alimentary canal. > Aside from the mouth and the anal segments, each segment contains setae and nephridia.