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D)Phylum Ctenophora:1.commonly know as sea walnuts,or comb jellies. It contains only about 80 species. They are commonly called sponges. 2. They show two types of body called polyp and medusa. Life cycle shows a kind of alternation of generations called metagenesis. iii) Coelenteron is divided into chambers by vertical partitions called mesenteries. 5. Fertilization … They exhibit two basic body forms called polyp (sessile and cylindrical) and medusa (umbrella-shaped and free-swimming. Medusa is umbrella shaped & free swimming form(ex: Aurelia). The former is a sessile and cylindrical form like Hydra, Adamsia, etc. They are exclusively marine. They have tissue level of organisation and are diploblastic. 4. Polyp is a sessile and cylindrical form like Hydra, Adamsia, etc. The dorsal part of the blastopore is called the dorsal lip, and the cells around it later give rise to the head region of the animal. C) Hydra done clear. whereas, medussa is umbrella-shaped and free-swimming like Aurelia or jelly fish. The animals in which body cavity is absent are called acoelomate (Platyhelminthes). Examples: Physalia, Adamsia, etc. Sexes are not separate. : taxa). Tissue level organization is present. They have tissue level of organisation and are diploblastic. [4 ] C. Phylum: Ctenophora (Animals are commonly called sea walnuts or comb jellies) 1. Phylum cnidaria classified into threee classes - a)Hydrozoa b)Scyphozoa.C)Anthozoa. Body bear & external rows of ciliated plates that help in locomotion. 2.exclusively marine. Cnidoblasts are used for anchorage, defense and for the capture of prey. Adamsia done clear. They have open circulatory system and presence of … B) Fungia done clear. Platyhelminthes Characteristics. Coelenterata (Cnidaria) are aquatic, mostly marine sessile or free-swimming radially symmetrical They exhibit tissue level of organization [have more body design differentiation than sponges]. There is a group of fish called"fish cleaners", because they are responsible for cleaning other fish, called customers. Some cnidarians exhibits both forms (Obelia), polyp produce medusa asexually and medusa produce polyp sexually. They have biradial symmetry. Get the answers you need, now! They are generally marine and mostly asymmetrical animals. They have tissue-grade of organization. The Animal Kingdom are organisms whose cells have a nucleus enclosed within a nuclear envelope, multicellular organisms that they take food from external sources. They are radially symmetrical. b) They are exclusively marine, commonly called sea walnuts and shows bioluminescence. This pathway of water transport is helpful in food gathering, respiratory exchange and removal of waste. 3.diploblastic& tissue level. Bioluminescence is seen in them. Digestion – both extra & intracellular . The blastocoel is now called the archenteron, and will eventually develop into the digestive tract of the animal. iv) Cnidocytes are present in ectoderm and endoderm. It has a lower peduncle and a distal rachis. whereas, the latter is umbrella-shaped and freeswimming like Aurelia or jelly-fish. aurelia is jelly fish not comb jelly it is ctenoplanna. whereas, the latter is umbrella-shaped and free-swimming like Aurelia or jelly fish. They are transparent. whereas, the latter is umbrella-shaped and free-swimming like Aurelia or jelly fish. Phylum Ctenophora shows the following salient features All the ctenophores are marine. Cnidarians exhibit two basic body forms called polyp and medusa The former is a sessile and cylindrical form like Hydra, Adamsia, etc. Polyp is a sessile and cylindrical form like Hydra, Adamsia, etc. In some animals, body is externally and internally divided into segments with serial repetition as in earthworm, called metameric segmentation. Diploblastic with tissue level organization . C. Phylum: Ctenophora (Animals are commonly called sea walnuts or comb jellies) 1. Other readers will always be interested in your opinion of the books you've read. The body bears eight external rows of ciliated comb-plates, which help in locomotion. pin worm is enterobius Ctenophora. D) Physalia done clear. 5. These are exclusively marine animals. called the taxonomic category and all categories together constitute the taxonomic hierarchy. Ctenophores are commonly called [A] jelly fishes [B] sea biscuits [C] sea walnuts [D] sea lions Questions No:13 Bioluminescence is exhibited by [A] Physalia [B] … whereas, the latter is umbrella-shaped and free-swimming like Aurelia or jelly fish. Sponges have a water transport or canal system. You can write a book review and share your experiences. A visceral hump . Write short notes on the salient features of anthozoa . Exclusively marine . Explanation: second option is correct as adamsia is the scientific name for sea anemone. This characteristic feature is called (a) Segmentation (b) Metamerism (c) Metagenesis (d) Metamorphosis Ans: (b) Metamerism: In some animals, the body is externally and internally divided into segments with a serial repetition of at least some organs. 35.13) is commonly called sea pen. These are mostly endoparasites found in animals, including humans. The body bears eight external rows of ciliated comb-plates, which help in locomotion. These species are commonly called as flatworms because of their dorso-ventrally flattened body. What is the class to which the flukes belong? They have bilateral symmetrical body and they are triploblastic and acoelomate animals possessing organ level of organisation. i) Anthozoans are commonly called sea anemones. Cnidarians exhibit two basic body forms called polyp and medusa. Reproduction by sexual means. Stinging cells or nematocysts are present for defense. The stem contains an unbranched horny skeletal rod, an enteron cavity, and mesogloea within which are solenia as tubular extensions of the enteron. It includes a set of marine animals commonly called comb jellies or sea walnuts. Wr ite short notes on the chief characters of the group? Question No : 9 Aquatic annelids (like Nereis) possess lateral appendages called _____, which help in swimming. Animals can also be divided on the basis of the development of other features as well as the developmental origin of their mouth. Title: Microsoft Word - 02_3cnidaria.doc Author: newuser Created Date: … Each category, referred to as a unit of classification, in fact, represents a rank and is commonly termed as taxon (pl. Polyp is sessile, fixed, and cylindrical, without gonads such as Hydra, Adamsia and Medusa is free swimming, umbrella like having four gonads like Aurelia and Jelly fish. About 6500 species are known. Gorgonia, Physalia, Adamsia, Meandrina, etc. Phylum - Ctenophora. Metridium & Adamsia is commonly known as sea anemone. Cnidarians exhibit two basic body forms called polyp and medusa (Figure 4.6). 3. 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., … 3. It forms a quill-like bilaterally symmetrical colony which looks like a fern frond. A. Flukes belong to the class Trematoda of phylum – Platyhelminthes 1) Trematoda organs are commonly called as flukes 2) These are parasitic on other animals Phylum Porifera-Members of this phylum are commonly known as sponges. D) Porifera done clear. Taxonomical studies of all known organisms have led to the development of common … Cleaners are usually smaller animals so that they can enter into confined spaces (like the mouths of other fish). Pennatula (Fig. These animals exhibit the characters of Coelenterata and platyhelminthes. aplysia is sea hare not sea mouse. The fate of the blastopore depends on the complexity of the animals. Physalia (Portuguese man-of-war) Adamsia (Sea anemone) 22. two basic body forms called polyp and medusa (Figure 4.6). v) Germ cells are derived from endoderm. ancyclostoma is hook worm not pin worm. Radially symmetrical. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. They are radially symmetrical. Parasitic forms include hooks and … Those cnidarians which exist in both forms exhibit alternation of generation (Metagenesis), i.e., polyps produce medusae asexually and PHYLUM – CTENOPHORA. Digestive system is in a blind sac plan, with mouth as the only opening. These animals exhibit the characters of Coelenterata and platyhelminthes. The central stem is a huge axial polyp. They are exclusively marine. sea muse is aphrodita. The body is radially symmetrical and diploblastic. 3. The former is a sessile and cylindrical form like Hydra, Adamsia, etc. Similarly, the hermit crab Eupagurus prideauxi and the sea anemone Adamsia palliata are always found living together, never alone. Also, cleaners usually concentrate on reefs to which customers come to receive cleaning services. q Metridium & Adamsia is commonly known as sea anemone. Commonly called sea walnuts. 4. Which group is commonly called as 'sea stick' A) Arthropoda done clear. Phylum Ctenophora Ctenophora is a small phylum. c) Body is divided into proboscis, collar and trunk. 2. Q129 . CLASSIFICATION OF ANIMALS. ii) They are sedendary (only polypoid forms). Giant clam and zooxanthellae- Giant clam, Tridacna gigas lives in the well lighted shallow coastal water and its mantle cavity harbours huge population of the algal symbiotic dinoflagellate species, which is commonly called Zooxanthellae (Symbiodinium microadriaticum). Share this question with your friends. (i) Introduction: Ctenophora is a small phylum. Common Examples: Physalia (Portuguese man-of-war), Adamsia (Sea anemone), Pennatula (Sea-pen), Gorgonia (Sea-fan) and Meandrina (Brain coral). 2. Water enters through minute pores (ostia) in the body wall into a central cavity, spongocoel, from where it goes out through the osculum. Members of Phaeophyceae are commonly called brown algae Correct Answer: Members of Phaeophyceae are commonly called red algae फीयोफाइसी के सदस्यों को लाल शैवाल कहते हैं. Ex: 1.hydra ,Adamsia(polyp)sessile& cylindrical form. B) Echinodermata done clear. Cnidarians exhibit two basic body forms called polyp and medusa. Pinna nobilis, commonly called the pen shell, is a large bivalve that can grow to 1 metre in length and it requires strong attachment by byssus to avoid being moved by currents and to hold the animal upright to allow efficient feeding (an example of a pen shell is shown in the video clip above). Animal Kingdom - Live Session(10 Jan)-NEET 2020 Contact Number: 9667591930 / 8527521718 C) Coelenterata done clear. E.g:: Adamsia - sea anemone Corallhnn - a coral animal Gorgonia - colonial form commonly called-sea fan Pennatula - sea pen. Adamsia (Sea anemone), Pennatula (Sea-pen) are examples of which Phylum? View Solution play_arrow; question_answer7) Which of the following is a polymorphic coelenterate [CPMT 1998] A) Physalia done clear. Ex: Adamsia (sea anemone), Gorgonia (sea fan), Pennatula (sea pen) 2. adamsia sea anemone. These are commonly known as sea walnuts or comb jellies. They are solitary and pelagic. PHYLUM COELENTERATA (=CNIDARIA) Coelenterates are radially symmetrical, diploblastic aquatic animals with diffused nervous system. Pennatula, Gorgonia, Physalia, Adamsia, Meandrina, etc.
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