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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.
Q. Can you explain Toxicants in Plant Foods? Several foods, some of which we consume regularly, have toxic compounds in them which are best avoided. These compounds can be prot
Problems of Osmoregulation The water, some inorganic salts, nutrient molecules are some of the important components of the body fluids. It is essential for the animals to main
EXTERNAL GENITALIA - Vestibule is covered by 2 pairs of lips labia majoris and labia minoris. At the anterior junction of labia minoris a small erectile clitoris presen
A woman was injured several years ago in a car accident and she was diagnosed with a herniated disc. Can you please explain using the correct anatomical terminology what herniation
Insulin binding to insulin receptors in the plasma membrane of a A. liver cell will lead to an increase in the intracellular amounts of cAMP in the liver cell. B. beta-islet
How is claimant need to make balance of probability? When there is no loss suffered through a person after that there cannot be a civil proceeding not like under criminal law t
Biochemistry : The chemistry of living organisms that covers all the chemical reactions occurring in our body.
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Describe Fourth Heart Sound in details? S 4 is generated during the atrial-filling phase. It is a low frequency event. LVS, is best heard over apex. Mechanism of S 4 generat
Explain the term Lipids? If somebody discovers that you have some knowledge of nutrition, you will be promptly shooted with two questions, first, "Oh! You really can tell how m
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