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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.
Q. How does the organism understand that a clotting process must begin? When there is some tissue wound with injury of blood vessel the platelets and endothelial cells of the w
Hormones Controlling Other Functions Crustacean's exhibit pronounced capacity for physiological color changes. It is known that the color changing mechanisms in Crustacea are
Omnispective Classification This is the extension of the concept of natural classification put forward by Black Welder (1967). The approach seems quite realistic and pragmatic.
how is urea formed in the human body?
Poverty and Malnutrition Poverty and malnutrition are closely related. As noted before, many elementary aspects of being poor like hunger, inadequate health care, unhygienic l
State the term - Aneurysms Aneurysms are vascular dilations resulting from localised defects in the elasticity of a vessel. They can be visualised as balloon like expansions of
Awhat is the function of malpigrium tubulessk question #Minimum 100 words accepted#
Clinical symptoms of HIV Generally, a person infected with HIV does not show any apparent symptoms for a number (3 to 12) of years. Ten to fifteen percent infected people may,
salient features of phylum Protozoa
Elaborate the internal vascular circulation of an eye. Retinal vessels are derived from central retinal artery and are distributed within the inner two-third of retina. Outer o
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