See more ideas about Sea sponge, Sea creatures, Marine life. The phylum Cnidaria contains more than 10,000 living species, among […] Cnideraia are also known as Coelenterata. Leuckart (1847) first coined the name Cnidaria. Sea pens differ from the closely related sea pansies and sea feathers by the form of the colony. Cnidaria (/ n aɪ ˈ d ɛər i ə /) is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments: they are … Phylum Cnidaria is divided into three classes i. They are stout, cylindrical, and generally curved in shape with densely-set, conspicuously two-toothed calyces. Class Anthozoa. Class Hydrozoa. See more ideas about Sea sponge, Sea creatures, Marine life. Characteristics: The common sea pen can grow to a height of 40 cm. The term ‘Cnidaria’ is derived from two words; Gr. Each sea pen is a colony of polyps (small anemonelike individuals) working together for the survival of the whole. CNIDARIA 6 Phylum Cnidaria Class Anthozoa Subclass Octocorallia Order Pennatulacea (sea pens) (PTU) Family Echinoptilidae Echinoptilum sp. Each animal or polyp have a cylindrical body and one or more rings of tentacles around the mouth. The primary polyp loses its tentacles and becomes the stalk of the sea pen, with a bulb at its base—the bulb anchors the sea pen in the muddy or sandy bottom.
Knide=nettle and L. aria=like or connected with. Phylum: Cnidaria 68 Pennatulacea (sea pen) body plan Scyphozoa (jellyﬁsh) body plan Diagram adapted from Cornelius, 1997, with permission. 1. Cnideraia are also known as Coelenterata.
Jan 22, 2015 - Explore bferrari0433's board "Phylum Porifera" on Pinterest. (For example, Jellyfish) iii. Classification of Phylum Cnidaria. There are 14 families within the order; 35 extant genera, and it is estimated that of 450 described species, around 200 are valid. Their eggs form larvae which attach to some surface and start developing a new animal or colony. The phylum Cnidaria contains more than 10,000 living species, among […] Some reach a length of 2 ft (61 cm) or more. Jan 22, 2015 - Explore bferrari0433's board "Phylum Porifera" on Pinterest. Class Scyphozoa. The term ‘Cnidaria’ is derived from two words; Gr.
With its deep red color it is easily distinguished from other sea pens. Phylum Cnidaria Phylum Cnidaria (ny-dar´e-a) (Gr.
May 9, 2016 - Explore xastiag's board "Phylum Porifera" on Pinterest. See more ideas about Zoology, Ocean creatures, Sea creatures. There is a highly developed muscle and neural system in the stem, enabling the colony to "walk" along the bottom in search for a better location. Knide=nettle and L. aria=like or connected with. They have diverse colorful, radially symmetrical bodies which are known as the flower of the sea. Sea pens have a cosmopolitan distribution, being found in tropical and temperate waters worl (For example, bougainvillea, Physalia, obelia) ii. (For example, corals, sea anemones and sea pen) ***** SHORT NOTE ON PHYLUM COELENTERATA OR PHYLUM CNIDARIA. Sea pens are colonial marine cnidarians belonging to the order Pennatulacea. They have diverse colorful, radially symmetrical bodies which are known as the flower of the sea. (Prickly sea pen) (ECP) Distinguishing features: Relatively small sea pens (usually less than 80 mm in length). knide, nettle, + L. aria [pl. Leuckart (1847) first coined the name Cnidaria. Characteristics: Unlike other cnidarians, the sea anemones and corals do not have a medusa stage in their life cycle. They belong in the phylum Cnidaria , class Anthozoa, order Pennatulacea. Sea pens are marine organisms; they are found on Atlantic and Pacific coasts in shallow to moderately deep water. suffix], like or connected with) is an interesting group of more than 9000 species.It takes its name from cells called cnidocytes, which contain the stinging organelles (nematocysts) characteristic of the phylum.
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