Archive | Phylum Cnidaria

Sense Organs in Aurelia (With Diagram) | Phylum Cnidaria

In this article we will discuss about the sense organs in aurelia, explained with the help of a suitable diagram. i. Sense Organs: The sense organs include the olfactory pits, the ocelli and the tentaculocysts or rhopalia. ii. Olfactory Pits: Two, lined with sensory epithelium—one lie on the ex-umbrella and the other in the sense club. These are chemoreceptors and [...]

By |2017-01-11T14:47:37+00:00January 11, 2017|Phylum Cnidaria|Comments Off on Sense Organs in Aurelia (With Diagram) | Phylum Cnidaria

Structure of Aurelia (With Diagram) | Phylum Cnidaria

In this article we will discuss about the structure of aurelia, explained with the help of a suitable diagram. a. The body consists of a gelatinous disc with a slightly convex ex-umbrella (Fig. 20.17) and bears a four-cornered mouth on a short manubrium guarded by four oral arms at the centre of the sub-umbrella.   b. The margin bears a [...]

By |2017-01-11T14:47:37+00:00January 11, 2017|Phylum Cnidaria|Comments Off on Structure of Aurelia (With Diagram) | Phylum Cnidaria

Sea Anemone: Body Form and Body Wall | Phylum Cnidaria

In this article we will discuss about the body form and body wall of sea anemone, explained with the help of a suitable diagram.   Body Form and Mesentery of Sea Anemone: 1. Column-like body, broader than high. 2. At the anterior end lies the oral disc. 3. In the middle of the oral disc lies the mouth. 4. From [...]

By |2017-01-11T14:47:36+00:00January 11, 2017|Phylum Cnidaria|Comments Off on Sea Anemone: Body Form and Body Wall | Phylum Cnidaria
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