Tag Archives | Phylum Annelida

Phylum Annelida and Its Classification | Coelomates | Zoology

The phylum Annelida contains segmented worms (such as the earthworm). The development of segmented bodies allowed the formation of specialised functions in different segments. Annelids have an enlarged coelom to accommodate more complex internal organs. The well-developed, fluid-filled coelom and the tough integument act as a hydrostatic skeleton. There are about 12,000 marine, freshwater, and terrestrial species usually divided into [...]

By |2017-12-11T06:20:06+00:00December 11, 2017|Phylum Annelida|Comments Off on Phylum Annelida and Its Classification | Coelomates | Zoology
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Morphology of Neanthes (Sandworm) | Phylum Annelida

In this article we will discuss about the morphology of neanthes (sandworm). This will also help you to draw the structure and diagram of neanthes (sandworm). 1. The body is long, narrow, dorsoventrally flattened, bilaterally symmetrical with a tapering posterior and a broader anterior end (Fig. 24.1). 2. The size varies from 300 to 400 mm in length and 2 [...]

By |2017-01-11T14:47:34+00:00January 11, 2017|Phylum Annelida|Comments Off on Morphology of Neanthes (Sandworm) | Phylum Annelida
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Anatomy of Neanthes (Sandworm): With Diagram | Phylum Annelida

In this article we will discuss about the anatomy of neanthes (sandworm), explained with the help of a suitable diagram. 1. The outermost layer is a thin, porous cuticle secreted by the underlying epidermis. Two intersecting systems of fine lines are present in the cuticle (Fig. 24.4). 2. The epidermis is a single layer of cells containing different types of [...]

By |2017-01-11T14:47:33+00:00January 11, 2017|Phylum Annelida|Comments Off on Anatomy of Neanthes (Sandworm): With Diagram | Phylum Annelida
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