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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.
Perception of Light - Floral Induction Stimulus Leaves are found to be organs that perceive light 'stimulus', K.C. Hamner and J. Bonner showed in 1938 that even if all the lea
Plants of the open water zone In this zone plants are restricted to the limnetic one and generally consist of phytoplankton such as dinoflagellates, blue green algae and green
Describe TR Murmur and VSD murmur in details? TR Murmur : Characteristic: Holosystolic murmur, loudest at left lower-sternal border and becomes louder with inspiration (Carv
What is a vesicle? A vesicle is a relatively minute intracellular, membrane-enclosed sac that keeps or transports substances
Describe the general examination of clinical examination? It is always to better to ask the patient to help himself/herself in setting on to the examination table and rename so
ROLE OF PSYCHIATRIC NURSE: In Blocks 2 and 3 you have learnt about various therapeutic interventions for mental disorders like anxiety neurotic disorders, psychotic disorder
How many pints (473 ml) of Fat Tire amber ale can an 80 kg person drink in Arizona before reaching the blood alcohol limit? Fat Tire's ethanol concentration of 5.3% (v/v). Assume c
Define Amylopectin - carbohydrates? Amylopectin differs from amylose in being highly branched. Short side chains of about 30 glucose units are attached with α (1-6) linkages ap
Dominance In each community, a few over topping species are present in greater bulk. By their greater number or biomass (living weight) the dominant species modify the habitat
Explain Adverse effects of Indinavir In addition to adverse effects similar to those of other protease inhibitors, indinavir causes elevation of indirect bilirubin, indinavir
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