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Q. Fish identity card. How are fishes characterized according to examples of representing beings, skin, basic morphology, circulation, nitrogen waste, respiration, thermal control and types of reproduction?
Examples of representing beings: tuna, sardines, sharks, rays, salmons. Basic morphology: hydrodynamic body, fins cartilaginous skeleton in chondrichthyes, bony skeleton in osteichthyes. Skin: with scales in placoid and osteichthyes scales in chondrichthyes. Respiration: branchial, Circulation: incomplete, closed, heart with two chambers. Nitrogen waste: urea in chondrichthyes, ammonia in osteichthyes. Thermal control: heterothermic. Kind of reproduction: sexual, internal fecundation in chondrichthyes, external in osteichthyes.
Industrial melanism refers to the dark pigmentation that evolved in some insects giving them protective coloration on vegetation darkened by soot in heavily industrialized areas pr
Define species according to the biological species concept. What two problems often make this definition impractical?
Q. Explain about Gestational Diabetes Mellitus ? During pregnancy, a woman who does not have a history of diabetes, may develop high blood glucose or sugar. This is GDM. The di
pisces kingdom
Cutaneous respiration in frogs and toads
a) Mention the number of primers needed in each cycle of polymerase chain Reaction (PCR) . Write the role of primers and DNA polymerase in PCR. b) Give the characteristic fea
Chemotaxis - Modes of Cell Movement Chemotaxis considers to me directed movement of cells in response to a concentration gradient of a chemical factor in solution. An instance
Lens - Organogenesis of Eye and Limb There is much experimental proof that the lens formation in many species is dependent on the induction by the optic vesicle while it conta
Chromatin is made of DNA molecules associated to proteins known as histones.
Avian influenza The etiological a gentisa via ninfluenz a type A virus und e r the family Orthomyxoviridae. Avian influenza pandemics in Pakistan, Nepal and Myanamar (1995) and
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