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Spiracular Control - Respiration
Another very interesting system of spiracular control is seen in some insect species. The spiracles are kept closed tightly most of the time. When the insect requires oxygen the spiracles open partially and close rapidly again. This 'fluttering' of the spiracle lets the air enter in a streaming movement without much loss of water.
Once a high partial pressure of oxygen is reached the spiracles close. While the oxygen is utilised by the tissues the carbon dioxide is stored temporarily in the tissues as bicarbonates thus keeping the Pco2 within tolerable limits, when Pco2, reaches a critical limit the spiracles open fully and expel the carbon dioxide in a single burst and the cycle is repeated.
VAS A DIFFRENTIA - Originate from wollfian duct . It comes out fo cauda epdidymis enters into abdominal cavity through inguinal canal, forms loop round the uretor and j
Soil Temperature Soil temperature is known to influence water absorption and ultimately transpiration to a considerable extent. In many plants water absorption is reduced shar
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What do numeric pyramids represent? Numeric pyramids show the number of individuals in each trophic level of a food chain.
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how to make a membrane protein which in ER transfer to PM. whether can cut some amino of sequence which play as signal guide the protein to where could the problem
a) Why are grasshopper and Drosophila said to show male heterogamity? Describe. b) Define female heterogamity with the help of an example.
Suppose a sample of 200 microliters of blood needs to be diluted 1/50. How much diluents should be added and what will be the final volume? Show all steps.
This constitutes about 2.4% of the body weight of man viz. Brain-1400 gram Spinal nerve-150 gram Spinal cord-30 gram Cranial nerve-10 gram C.S.F. is altogether not present in
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