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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.
Permanent Wilting Percentage (PWP) It is the percentage of moisture in the soil at which a plant wilts and does not recover unless water is added to the soil. PWP for clay is
A 70-year old woman presents with a 1-hour history of crushing substernal chest pain. Shortly after admission, the patient expires. An autopsy reveals calcium deposits in the intim
Competition - Processes in Succession The aggregation of individuals in an area leads to inter specific and intra specific competition. The competition is usually for
Morphogenesis and Totipotency A chlamydomonas mother cell gives rise to two daughter cells by a simple division. But a leaf cell cannot give rise to a new plant except in cas
Homology indicates similarity between the two different nucleotide or the amino acid sequences, generally with potential evolutionary importance. It is probably better to use more
Explain about the Holmgren's Wools This is a matching test of coloured pieces of wool. While this is not a highly favored method of testing it does show serious d
Explain about the Browning Reactions? The Browning Reactions are complex reactions which occur when foods are processed. In some the brown flavour is highly desirable and is in
Explain What is the optimum temperature for catalyses? Ans) For any chemical reaction, the reaction rate enhances with temperature, so the higher the temperature, the earlier t
Q. What is an evolutionary tree? Is there a precise evolutionary tree known by science that explains the emergence and origin of every type of living being? Evolutionary tree i
IRON It is present in bread, potatoes, green vegetables, especially spinach, lettuce, cocoa, raisins, red meat, liver, kidney, egg yolk etc. Iron is also available in the bo
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