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Poison gland of snakes is homologous to-
  • a)
    Electric organ of fishes
  • b)
    Stings of rays
  • c)
    Sebaceous glands of mammals
  • d)
    Salivary gland of vertebrates
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Poison gland of snakes is homologous to-a)Electric organ of fishesb)S...
Poison gland of snakes is homologous to the salivary glands of vertebrates. Snake venom is actually the refined form of its saliva.
Hence, the correct option is (d).
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It has long been known that the rate of oxidative metabolism (the process that uses oxygen to convert food into energy) in any animal has a profound effect on its living patterns. The high metabolic rate of small animals, for example, gives them sustained power and activity per unit of weight, but at the cost of requiring constant consumption of food and water. Very large animals, with their relatively low metabolic rates, can survive well on a sporadic food supply, but can generate little metabolic energy per gram of body weight. If only oxidative metabolic rate is considered, therefore, one might assume that smaller, more active, animals could prey on larger ones, at least if they attacked in groups. Perhaps they could if it were not for anaerobic glycolysis, the great equalizer. Anaerobic glycolysis is a process in which energy is produced, without oxygen, through the breakdown of muscle glycogen into lactic acid and adenosine triphosphate (ATP), the energy provider. The amount of energy that can be produced anaerobically is a function of the amount of glycogen present—in all vertebrates about 0.5 percent of their muscle’s weight. Thus, the anaerobic energy reserves of a vertebrate are proportional to the size of the animal. If, for example, some predators had attacked a 100-ton dinosaur, normally torpid, the dinosaur would have been able to generate almost instantaneously, via anaerobic glycolysis, the energy of 3,000 humans at maximum oxidative metabolic energy production. This explains how many large species have managed to compete with their more active neighbours: the compensation for a low oxidative metabolic rate is glycolysis.Q. The passage suggests that the total anaerobic energy reserves of a vertebrate are proportional to the vertebrate’s size because

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Poison gland of snakes is homologous to-a)Electric organ of fishesb)Stings of raysc)Sebaceous glands of mammalsd)Salivary gland of vertebratesCorrect answer is option 'D'. Can you explain this answer?
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Poison gland of snakes is homologous to-a)Electric organ of fishesb)Stings of raysc)Sebaceous glands of mammalsd)Salivary gland of vertebratesCorrect answer is option 'D'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Poison gland of snakes is homologous to-a)Electric organ of fishesb)Stings of raysc)Sebaceous glands of mammalsd)Salivary gland of vertebratesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Poison gland of snakes is homologous to-a)Electric organ of fishesb)Stings of raysc)Sebaceous glands of mammalsd)Salivary gland of vertebratesCorrect answer is option 'D'. Can you explain this answer?.
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