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Cnidaria

by Alphascript Publishing
State: New
£56.62
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Alphascript Publishing Cnidaria
Alphascript Publishing - Cnidaria

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Delivery: between 2021-05-18 and 2021-05-20
Sales & Shipping: Dodax EU

Description

Cnidaria is a phylum containing over 9,000 species of animals found exclusively in aquatic, mostly marine, environments. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick. They have two basic body forms: swimming medusae and sessile polyps, both of which are radially symmetrical with mouths surrounded by tentacles that bear cnidocytes. Both forms have a single orifice and body cavity that are used for digestion and respiration. Many cnidarian species produce colonies that are single organisms composed of medusa-like or polyp-like zooids, or both. Cnidarians' activities are coordinated by a decentralized nerve net and simple receptors. Several free-swimming Cubozoa and Scyphozoa possess balance-sensing statocysts, and some have simple eyes. All cnidarians reproduce sexually. Many have complex lifecycles with asexual polyp stages and sexual medusae, but some omit either the polyp or the medusa stage.

Further information

Language:
Englisch
Number of Pages:
364
Media Type:
Taschenbuch
Publisher:
Alphascript Publishing

Master Data

Product Type:
Paperback book
Package Dimensions:
0.23 x 0.15 x 0.02 m; 0.531 kg
GTIN:
09786130228866
DUIN:
SHEP2GHNHIT
£56.62
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