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Tlie phylum Cnidaria or Coelenterata, includes the faliiiliar hydras, jelly fishes, sea anemones and corals. You have olreacly studied about Cnidarialis in Units 4 and 7 of LSE-09 course. These are often brilliantly colourcd. They exhibit radial symnietry, The Cnidarians possess two basic metazoall structural features. Onc, there is an intenla1 space for digestion, called in Cnidarinns as gastrovascular cavity. This cavity lies along the polar axis of the animal atid opens to tlie outside at one end to for111 noutli, Tlie presence of a mouth a~id digestive cavity permits the use of a mucll greater rnlige of food sizes than is possible in tlie protozoarls and sponges. Two, in Clidariails a circle of tentacles, representing exte~lsiolls of the body wall, surrounds tlie ~lioiltli to aid in tlie capture and ingestion of food. Tlie Cnidarian body wall consists of three basic layers: an outer lnycr of cpidennis, nn inner layer of elidoder~nal cells lining Ilie gastrovnscilar cavity, and between these two a layer called mesoglea. The rnesoglea ranges from n tliin, non cellilar membranc to a thick, fibrous, jelly-like, coid lnaterial with or without wanderillg a~noebocytes, A considerable number of different cell types compose tlie epidermis and gastrader~nis, but there is only a limited degree of organ development.
What is a helix?
I need the Answers for the final exam for biology it''s a one hundred question test if you can help i would appreciate it
Define sex
Q. Important aspect of dietary management during hypertension? Most important aspect of dietary management i.e. the intake of minerals and electrolytes, which are closely assoc
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Protection of protein meals or bypass protein The protein of oil cakes, having higher protein degradability, such as groundnut cake, mustard cake are utilized in the rumen les
Goals of Computerization in Nursing Practice Improved Efficiency: Computers can rapidly process, store, and retrieve information, helping the nurse clinician in nursing
Ant-Nutritional Factors Limiting their Optimum Use The anti-nutritional factors (ANFs) are non-fibrous natural substances which occur as natural constituents of plants and anim
briefly explaintransport system in earthworm
Aortic Valve Replacement with Replacement of Aortic Root : When there is aneurysm of ascending aorta with aortic regurgitation, aortic root replacement is done. This
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