Where is the clitellum located?

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.

1. What is the function of clitellum?
2. Where is the clitellum earthworm located?
3. What is meant by clitellum?
4. Do all worms have a clitellum?
5. Do leeches have clitellum?
6. What is the purpose of excretory openings in earthworms?
7. Where is the head of a worm?
8. What are the excretory organs of earthworm?
9. What is the function of the clitellum quizlet?
10. Do earthworms eat dirt?
11. Are earthworms hermaphrodites?
12. Where is the pharynx located in a worm?
13. What is the bump on a worm?
14. What is the head of an earthworm called?

What is the function of clitellum?

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.

Where is the clitellum earthworm located?

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. It produces most of the material secreted to form earthworm cocoons.

What is meant by clitellum?

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.

Do all worms have a clitellum?

The number of segments from the peristomium to the clitellum and the number of segments which make up the clitellum are species specific in earthworms. This means that if two earthworms have different numbers of segments leading up to the start of the clitellum, they are different earthworm species.

Do leeches have clitellum?

As hermaphrodites, leeches have both male and female sex organs. Like the earthworms they also have a clitellum, a region of thickened skin which is only obvious during the reproductive period.

What is the purpose of excretory openings in earthworms?

In earthworm, the nephridia functions for the removal of the excretory wastes both from blood and the coelomic fluid. There are 3 types of nephridia based on the structure and location: Septal nephridia or typical nephridia: Enteronephric nephridia. Integumentary nephridia: Exo-nephric nephridia.

Where is the head of a worm?

Though it may not seem like it, earthworms have a distinctive head and tail. The head of a worm is always located on the end closest to the swollen band, called the clitellum, that encircles the animal.

What are the excretory organs of earthworm?

Nephridia are the primary excretory organs of earthworm that carry out the duties of excretion and osmoregulation. Based on where they remove the metabolic wastes, they are of two types – enteronephric nephridia and enteronephric nephridia.

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.

Do earthworms eat dirt?

A. Earthworms eat soil! Their nutrition comes from things in soil, such as decaying roots and leaves. ... Worms will also feed on the decomposing remains of other animals.

Are earthworms hermaphrodites?

Earthworms are hermaphrodites, meaning an individual worm has both male and female reproductive organs. ... They wait for another earthworm to point in the opposite direction and then breed. The two worms join together, and a mucus is secreted so that each worm is enclosed in a tube of slime.

Where is the pharynx located in a worm?

the worm. Find the mouth opening, the first part after the mouth is the pharynx, you will see stringy things attached to either side of the pharynx (pharyngeal muscles).

What is the bump on a worm?

The bump is the clitellum, the saddle shaped swollen area 1/3 of the way back containing the gland cells which secrete a slimy material (mucus) to form the cocoon which will hold the worm embryos.

What is the head of an earthworm called?

The 'head' or front of the earthworm is called its anterior.