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.

What is the purpose of a cocoon in earthworms?

What is the purpose of the cocoon in the earthworm? An egg for them to hatch from. What is the difference between seminal receptacles and seminal vesicles in earthworms? Receptacles store sperm and the vesicles create the sperm.

Where is the clitellum of an earthworm?

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 earthworm Cingulum?

Explanation : Clitellum or cingulum- It is a circular or glandular band around 14th, 15th, and 16th It secrets albumen, globulin and egg case(cocoon). It divides the body of the earthworm into pre-clitellar, clitellar and post-clitellar.

What is the function of the clitellum in an earthworm 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.

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.

What is the cocoon of an earthworm produced by?

clitellum
Earthworms are hermaphrodites (i.e. they act as both male and female), but most species reproduce sexually by exchange of sperm (amphimictic), whilst others reproduce asexually (parthenogenetic). Cocoons are produced periodically by adults through secretions from the clitellum, and they are deposited in the soil (Fig.

How do earthworms make cocoons?

When mating, another worm and I join together with heads pointing in opposite directions. Sperm is passed from one worm to the other and stored in sacs. Then a cocoon forms on each of us on our clitellum. As we back out of the narrowing cocoons, eggs and sperm are deposited in the cocoon.

What clitellum means?

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 Typhlosole and its function?

In earthworms, typhlosole is a dorsal flap of the intestine that runs along most of its length, effectively forming a tube within a tube, and increasing the absorption area by that of its inner surface. Its function is to increase the intestine surface area for more efficient absorption of digested nutrients.

What is meant by Pheretima Posthuma?

Pheretima Posthuma is a species of earthworm belonging to the Megascolecidae Family. Earthworms belonging to the Megascolecidae Family are found primarily in portions of Southeast Asia, such as India, as well as parts of Oceania and North America.

What is the function of the clitellum in the earthworm This organ is visible externally?

What is the function of the clitellum in earthworm?

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 its eggs.

How do earthworms lay eggs?

Eggs are deposited into a mucus sac and sperm from another worm is deposited via speem pores into the sac as it slides off the head of the earthworm. Absence of a clitellum is a sign of a juvenile worm incapable of breeding yet.

What is the female sex organ of an earthworm?

Answer Wiki. The clitellum is the female sex organ of an earthworm. Eggs are deposited into a mucus sac and sperm from another worm is deposited via speem pores into the sac as it slides off the head of the earthworm.