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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.
Define Reagent for Determination of Blood Glucose by Nelson Somogyi? 1. Alkaline copper reagent a) Dissolve 15 g of sodium potassium tartarate and 30 g of anhydrous N
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Environment impact assessment (EIA) is a tool used for decision making regarding developmental projects and programmes and it may be defined as formal process used to predict the e
What are autotrophic beings? What are heterotrophic beings? Autotrophic beings are those that can make their own food, i.e., that make organic material from inorganic compounds
What are the common changes in the eye Other changes in the eye are: 1) Increase in curvature of anterior surface of lens. 2) Anterior pole of lens moves forwards without
Q. Briefly explain about Type Specimens ? The specimens on which the names of the species are based are kept as type specimens. Do not replace these specimens because these wi
What do biomass pyramids represent? Biomass pyramids show the sum of the masses of the individuals that participate in each trophic level of a food chain.
TYPES OF REGENERATION - R eparative R estorative 1. It is limited to healing of wounds or replacement of cells It can replace
What is the function of vitamin E? In which foods can it be found? Vitamin E, or tocopherol, is a fat-soluble vitamin that participates as coenzyme in the respiratory chain, t
Alginate Alginates are produced by brown seaweeds (Phaeophyceae, mainly Laminaria). Alginates or algin, is a generic term for the salts and derivatives of alginic acid. Algin
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