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Vertebrates - Osmotic and Ionic Regulation
In terrestrial vertebrates hormones such as prolactin, antidiuretic hormone and adrenocortical steroids are known to control water and salt balance Hormones of urohypophysis and corpuscles of Stannius are also involved in some of the aquatic forms. Parathyroid glands and ultimobranchial bodies maintain the levels of calcium and phosphorus. Catacholamines and angiotensin also participate in this regulatory system. The hormones operate faintly or individually on all the target organs concerned with water/ion balance.
a) In humans, is it the sperm or the ovum which verifies the sex of the offspring? b) Give a reason for your answer. (a) The sperm verifies the sex of the off
Explain Free Water - Water Found in Food? Water which is bound by such minute forces, that its vapour pressure is equal to the vapour pressure of pure water. It can be found as
What is the natural habitat of E.coli? The E.coli was first recognized in the colon region of large intestine and so it was given the name "coli" (found in colon) they are coli
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The first ever australopithecine fossil was found in 1924 at Taung, South Africa. It was the skull of a 6 year old child showing a mixture of human and ape like features. This a
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Q. What is the relation between the concepts of chromosome and chromatin? Are heterochromatin and euchromatin part of chromosomes? Every filament of chromatin is a complete DNA
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