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Water loss during excretion
In terrestrial animals body water is also lost during excretion of nitrogenous wastes. A number of physiological adaptations have taken place to minimise the loss of water associated with this phenomena. You have learnt in the previous Unit that among terrestrial invertebrates, insects are highly effective in conserving water.
In terrestrial vertebrates, kidney is the chief organ of osmoregulation and excretion. The loop of Henle is the specialised part of the nephron which produces hyperosmotic urine. Amphibians and reptiles which are unable to produce a hyperosmotic urine, as an adaptive consequence, cease urine production entirely during the period of osmotic stress.
At the present level of the biotechnology what are the main techniques of genetic engineering? The major techniques of genetic engineering today are: the recombinant DNA techno
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Classifying Organisms You have now seen that the binomial nomenclature gives each species a unique and unambiguous name. It is necessary lo group species into genera and gener
Mitral valve prolapse (MVP) has emerged as a prominent, predisposing structural cardiac abnormality and in adults accounts for 7 to 30 per cent of NVE in cases not related to drug
Explain Insect resistant crops in Evolutionary way Insects are a natural selection pressure so plants resistant to certain insects could have an evolutionary advantage (in
Q. Fluids requirement in ulcerative colitis? Fluids: A liberal intake of fluid should be given to prevent dehydration. The passage of at least 1200 ml of urine indicates that a
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