What is the function of Clitellum in Oligochaetes?

Asked by: Quenton Holland

animal reproduction Sexually mature oligochaetes have a clitellum, which is a modification of a section of the body wall consisting of a glandular, saddlelike thickening near the gonopores. During copulation, the clitellum secretes a mucus that keeps the worms paired while sperm are being exchanged.

What is the main function of the clitellum?

The clitellum is a thick, saddle-like ring found in the epidermis (skin) of the worm, usually with a light-colored pigment. To form a cocoon for its eggs, the clitellum secretes a viscous fluid. This organ is used in sexual reproduction of some annelids, such as leeches.

What is the function of the clitellum in annelid life cycles?

Clitellate annelids are distinguished from other worms by their characteristic reproductive structure, the clitellum, whose function is to secrete an egg capsule, or cocoon. The clitellum appears as a thickened sleeve or saddle a few segments in length within the anterior third region of the worm.

What is clitellum in very short answer?

Definition of clitellum



: a thickened glandular section of the body wall of some annelids that secretes a viscid sac in which the eggs are deposited.

What is the function of the clitellum quizlet?

What is the function of the clitellum, the only organ visible externally on earthworms? It secretes mucus that is important in reproduction. The worm alternates between extension and pulling the rest of its body after the extension.

How do oligochaetes reproduce asexually?

Asexual reproduction occurs by one or more forms of transverse fission (the body splitting into two width wise). Some undergo fragmentation at one or several points along the body, regenerating the missing parts to form new worms.

How do you pronounce clitellum?

White salón white salón white white white salón white.

Is the clitellum part of the nervous system?

The clitellum is part of the reproductive system of earthworm. It also secretes a viscous fluid to form a cocoon for it’s eggs.
Apr 6, 2018

Is the clitellum in the same location on all worms?

The peristomium contains the mouth. Adult (sexually mature) earthworms have a distinct swelling called a clitellum. It is located about one-third of the way down the earthworm. The clitellum is often white or orange in colour.

What is the function of the septa in an earthworm?

An earthworm’s septums aid movement because they provide division internally between the earthworm’s body segments and allow fluid to build without passing into another segment. The continual muscle contraction and fluid distribution within each segment allow for the crawl-like movements the earthworm exhibits.
Apr 24, 2017

What is the function of the setae?

Bristles, called setae, are located on each segment of the earthworm’s body. They prevent the earthworm from slipping backwards. FEEDING The earthworm is specially adapted for feeding underground.

What is nephridia function?

The nephridium (plural nephridia) is an invertebrate organ, found in pairs and performing a function similar to the vertebrate kidneys (which originated from the chordate nephridia). Nephridia remove metabolic wastes from an animal’s body.

How many segments are in the clitellum of an earthworm?

segments 26 and 33

The clitellum forms a band that can be flared, non-flared, saddle-shaped, or annular. It is generally found between segments 26 and 33.