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Q. How do fishes do gas exchange?
Fishes "breath" through gills, branchiae or Gills, are highly vascularized organs specialized in gas exchange under water and present in aquatic animals (crustaceans, marine annelids, tadpoles and fishes). Gills are a respiratory organ (analogous, for instance, to lungs) containing very thin lamellae with many apparent blood vessels in direct contact with water.
In osteichthyes the gills are covered by a bony flap that protects them called as operculum, in chondrichthyes there are no opercula.
Floriculture: This is the cultivation and development of commercially important floral plants like rose, lilies, etc. Floriculture is called flower farming is a discipline of hort
How to prevent or overcome this nutritional deficiency? A large number of government schemes and programmes have been launched about which we have already studied in the Publi
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Two important human fossils that throw much light on the human ancestory were discovered in .Olduvai beds in Africa and in central Java respectively. Although the development of bi
Q. What are alkalosis and acidosis? Acidosis is the condition in which the blood pH is abnormally low Alkalosis is the condition in which the blood pH is abnormally high Normal
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Explain the Pipettes - Food Microbiology? Sterile glass pipettes or disposable pipettes can be used for transferring the known volume of liquid or culture aseptically. Steriliz
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Does greater light 80 cm instead of 20 cm produce more photosynthesis on plants? Why or why not
Each ventricle has an inflow part beginning just in front of the corresponding atrioventricular orifice and running forwards to the left towards the apex of the heart. The cavity t
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