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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.
Remove the crown for reuse - If the decision is made to remove the crown for reuse - The visibility is increased - Allowing for much easier removal of canal obstructions -
Which is the brain region responsible for the regulation of breathing and blood pressure? The neural regulation of breathing, blood pressure and other physiological parameters
Tracheal Gills - Respiration In many species of aquatic insects the air in the trachae is replenished by diffusion of oxygen via tracheal gills. Many aquatic insects carry a t
Ribo Nucleic Acid contains OH group at second carbon where as Deoxyribo Nucleic Acid lacks OH group at Second carbon.....DNA is Double standed helix whereas RNA is single stranded
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Rothera's Test It is highly sensitive for both acetoacetic and acetone. Although it is one of the oldest methods still it is widely used. Procedure: - Take about 5ml of
Give two examples in each case of (a) continuous, (b) discontinuous variation in human populations. a) Continuous variation: for example, weight, height, intelligence, ha
Secondary Egg Envelopes These are secreted by oviducts and other accessory parts of genital organs while the egg is passing through them from ovary to the exterior. a) In
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