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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.
Non-recurrent Type As mentioned earlier it refers to embryo development in reduced embryo sacs. The mechanisms identified for such cases are: Reduced Pseudogamy : The
What is Embryogenesis explain in detail? Embryogenesis in humans consists of the first eight weeks of development of the zygote. Embryogenesis in animals is generally divided i
Define Conditions associated with increased need for Vitamin A? Conditions and populations associated with increased need for vitamin A includes young children particularly t
Explain sol -gel transformation During sol -gel transformation, a three dimensional network is formed by the interlocking of dispersed particles. The liquid phase is entrapped
A healthy person is on a diet that consists of very small amounts of water. A. This person will have high water permeability across the luminal membranes of the medullary colle
Which technique would you use to A) see if a particular protein bound to a piece of DNA B) Detect exactly where on a piece of DNA a protein bound.
Significance of Mitosis 1. Reproduction ; William Bateson 1906 wrote, Whenever I observe a dividing cell under the microscope , I feel as if the original act of c
Q. What is metabolic disorders? In these metabolic disorders, since there is an inability to metabolize a specific amino acid the basis of dietary management is to restrict the
parts and functions of the anther
Q. What are nerves? Axons extend all through the body inside nerves. Nerves are axon-containing structures presenting many axons and covered by connective tissue. The nerves co
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