Fsc part 2 online preparation for biology chapter 15 (Homeostasis)

Online Short Questions For Chapter 1 "12th Class Biology Chapter 15 Short Questions Preparation "

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Biology - 12th Class Biology Chapter 15 Short Questions Preparation

Question # 1

Define the process of painting with one example.

  • Ans 1: It is structural adaptation for heat regulation in dogs.Panting is evaporative cooling in the respiratory tract for temperature regulation.
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Prepare Complete Set Wise Questions For Chapter 1 "12th Class Biology Chapter 15 Short Questions Preparation "

12th Class Biology Chapter 15 Short Questions Preparation - Set 1

Question # 1

Define the process of painting with one example.

  • Ans 1: It is structural adaptation for heat regulation in dogs.Panting is evaporative cooling in the respiratory tract for temperature regulation.
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12th Class Biology Chapter 15 Short Questions Preparation - Set 2

Question # 1

Differentiate between osmoregulation and thermoregulation.

  • Ans 1: Osmoregulation: The mechanism of regulation, generally between organism and its environment of solute and the gain & loss of water is called osmoregulation.
  • Ans 2: Thermoregulation:The maintenance of body temperature within a tolerable range is called thermoregulation.
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12th Class Biology Chapter 15 Short Questions Preparation - Set 3

Question # 1

Define Homeostasis.

  • Ans 1: The protection of internal environment from the harms of fluctuation in external environment is called homeostasis.The homeostasis keeps the internal fluctuation in a narrow range with various control systems compared to wider external fluctuation. The control system would not let the body flooded with water in abundant supply of water.
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12th Class Biology Chapter 15 Short Questions Preparation - Set 4

Question # 1

What is counter-current multiplier.

  • Ans 1: This mechanism causes gradual osmotic out flow from the filtrate back to kidneys as it passes downward in the descending loop of Henle.Furthermore, ascending loop of henle does not allow out flow of water from its filtrate,instead actively transport sodium ions into kidney interstitium to sustain its high concentration.
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12th Class Biology Chapter 15 Short Questions

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