Web Results


Annelids are capable of both sexual and asexual reproduction. The majority of annelids are hermaphroditic and have a set of functional male and female sex organs. Some species reproduce primarily by budding, while others reproduce by laying and fertilizing eggs that hatch into planktonic larvae.


The annelids (Annelida, from Latin anellus, "little ring"), also known as the ringed worms or segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches.The species exist in and have adapted to various ecologies – some in marine environments as distinct as tidal zones and hydrothermal vents, others in fresh water, and yet others in mo...


Annelids, or segmented worms, reproduce both sexually and asexually depending on the species. In this lesson you'll learn about how some of the different annelids and how they reproduce.


Annelida - "Ringed Worm" Leech. ... Reproduction occurs from the intertwining bodies of two worms and the sperm is collected by the female. Male leeches do not have a penis, but instead they have sharp packages of sperm that disperse when engaging in sexual reproduction. Some leeches are parasites and rely on blood from their host to live and ...


Reproduction and Development in Annelida - CRC Press Book. This book is a concise informative elucidation of all aspects of reproduction and development in annelids covering from arenicola to tubifex. Annelids flourish between 4,900 m depth to 2,000 m altitude; some of them occur in unusual habitats like hydrothermal vents and subterranean ...


Reproduction -Depending on the species, annelids can reproduce sexually or asexually. Asexual:-fission is a method used by some annelids and allows them to reproduce quickly.-the posterior end of the annelid breaks off and forms into a new worm.


Animal reproductive system - Annelids and mollusks: Annelids have a well-developed body cavity (coelom), a part of the lining of which gives rise to gonads. In some annelids, gonads occur in several successive body segments. This is true, for example, in polychaetes, most of which are dioecious.


ADVERTISEMENTS: In this article we will discuss about Annelida:- 1. History of Annelida 2. General Characters of Annelida 3. Classification 4. Metamerism 5. Coelom 6. Segmental Organs 7. Reproduction. Contents: History of Annelida General Characters of Annelida Classification of Annelida Metamerism in Annelida Coelom in Annelida Segmental Organs of Annelida Reproduction in Annelida 1.


Annelida (ənĕl´Ĭdə) [Lat., anellus=a ring], phylum of soft-bodied, bilaterally symmetrical (see symmetry, biological), segmented animals, known as the segmented, or annelid, worms.Over 12,000 known species are grouped in three classes: the earthworms and freshwater worms (oligochaetes), the leeches (hirudineans), and the marine worms (polychaetes).


Annelid: Annelid, any member of a phylum of invertebrate animals that are characterized by the possession of a body cavity (or coelom), movable bristles (or setae), and a body divided into segments by transverse rings, or annulations, from which they take their name. The coelom is reduced in leeches, and