WebObelia is sedentary, marine colonial form found attached on the surface of sea weeds, molluscan shells, rocks and wooden piles in shallow water up to 80 metres in depth. … WebObelia like animals Show two forms, polyp nutritive zooid and medusa reproductive zooid. This is called dimorphic organism In a colony of obelia 1) Hydranth (a Polyp stage) 2) …

Polymorphism. Polymorphism in Obelia. B.Sc first year.Zoology

Web• Polymorphism . Page 3 of 12 INTRODUCTION Obelia is a sedentary colonial marine cnidarian which grows upright in a branching tree-like form and has several specialized feeding and reproductive polyps. It is commonly called sea-fur It exists in both asexual, ... WebThe former is a sessile and cylindrical form like Hydra, Adamsia, etc. whereas, the latter is umbrella-shaped and free-swimming like Aurelia or jelly fish. Those cnidarians which exist in both forms exhibit alternation of generation (Metagenesis), i.e., polyps produce medusae asexually and medusae form the polyps sexually (e.g., Obelia) So, the ... darshan education foundation

Polymorphism can be seen in Biology Questions - Toppr

WebCharacteristics of Coelenterata. These are mostly aquatic or marine habitat animals. These species exhibit a tissue-level organization. The mouth is enclosed by thin and short tentacles. They are diploblastic animals, in which, the body is made up of two layers of cells: Ectoderm – One layer makes up the cells outside the body. WebObelia is a typical representative of colonial hydrozoa (Fig. 12.14). It is exclusively marine. It exists in two principal forms, the polyp and the medusa. The polyp or hydroid form represents the asexual phase of its life-history and the medusoid form represents the sexual phase. There is an alternation of these two phases or generations ... WebDisclaimerthis video is for educational purpose images are abstracted from Google . bissell garage pro wall-mounted wet dry car