Why is the clitellum so important?

Why is the clitellum so important?

Earthworms cannot see or hear, but they are sensitive to both light and vibrations. …a swollen girdle-like structure, the clitellum, which serves an important function in reproduction. After the eggs have matured, a mucous tube, secreted from the clitellum, slides along the body as the worm moves backward.

What is a clitellum and what is its function?

A clitellum is a modification of the epidermis, which develops as an easily visible, glandular girdle partly behind the female pores; it secretes a cocoon in which eggs are laid.

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 can we define 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 aortic arches in an earthworm?

The aortic arches function like a human heart. There are five pairs of aortic arches, which have the responsibility of pumping blood into the dorsal and ventral blood vessels. The dorsal blood vessels are responsible for carrying blood to the front of the earthworm’s body.

Is the clitellum located more toward the anterior or posterior of the worm?

They may have any combination of shapes. Locate the clitellum of a mature earthworm. The shorter region to one side of the clitellum is the anterior or head-end of the animal. This end of the worm is usually more pointed than the posterior end of the animal.

What is the Clitellum quizlet?

Clitellum: series of anterior segments enclosed in thick glandular epidermis; encompasses females gonopores and secretes mucus. Hermaphrodites, zygotes develop in a coccon and emerge and juveniles, direct development.

What is the function of the earthworms Clitellum that was observed in the earthworm lab?

Explanation: The clitellum is a thickened glandular and non segmented section of the body wall near the head of the earthworm that secretes a viscid sac in which the eggs are deposited. The clitellum is part of the reproductive system of earthworm. It also secretes a viscous fluid to form a cocoon for it’s eggs.

What is clitellum very short answer?

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 eggs are stored. It is located near the anterior end of the body, between the fourteenth and seventeenth segments.

What is the purpose of the excretory system?

The Excretory system is responsible for the elimination of wastes produced by homeostasis. There are several parts of the body that are involved in this process, such as sweat glands, the liver, the lungs and the kidney system.

What is excretion discuss the excretion process in earthworm?

In earthworm carbon dioxide and nitrogenous wastes are the main waste materials. The carbon dioxide is excreted out from the body through its moist skin by the process of diffusion. The nitrogenous wastes are excreted out of the body by special excretory organs called nephridia (singular nephridium).

What is the function of the clitellum in an earthworm?

Explanation: The clitellum is a thickened glandular and non segmented section of the body wall near the head of the earthworm that secretes a viscid sac in which the eggs are deposited. The clitellum is part of the reproductive system of earthworm. It also secretes a viscous fluid to form a cocoon for it’s eggs.

How is the clitellum used in sexual reproduction?

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. In earthworms, the clitellum can only be seen when the worm is sexually mature.

What is the function of the clitellum in annelids?

In animal reproductive system: Annelids and mollusks 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 kind of fluid does the clitellum secrete?

To form a cocoon for its eggs, the clitellum secretes a viscous fluid. This organ is used in sexual reproduction of some annelids. In earthworms, the clitellum can only be seen when the worm is sexually mature. It may be white, orange-red or reddish-brown in colour.