Fsc Part 2 Online Preparation for Biology Chapter 17 (Coordination and Control)

Online Short Questions For Chapter 3 "12th Class Biology Chapter 17 Short Questions Preparation "

Try The Short Questions For 12th Class Biology Chapter 17 Short Questions Preparation

  • Total Questions10

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Biology - 12th Class Biology Chapter 17 Short Questions Preparation

Question # 1

Define feedback machanism.

  • Ans 1: It is a type of interaction in which a controlling mechanism is itself controlled by the products of the reaction it is controlling.
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Prepare Complete Set Wise Questions For Chapter 3 "12th Class Biology Chapter 17 Short Questions Preparation "

12th Class Biology Chapter 17 Short Questions Preparation - Set 1

Question # 1

Define feedback machanism.

  • Ans 1: It is a type of interaction in which a controlling mechanism is itself controlled by the products of the reaction it is controlling.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 2

Question # 1

Mention the relative abundance and distribution of receptors in human skin.

  • Ans 1: The relative abundance of various types of receptors differs greatly for example pain receptors are nearly 27 times more abundant than cold receptors.The cold receptors are nearly 10 times more abundant than heat or temperature receptors.
  • Ans 2: The receptors are not distributed evenly over the entire surface of the body.For example touch receptors are much more numerous in the finger than in the skin of the back.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 3

Question # 1

Write down the commercial application of gibberellins.

  • Ans 1: Gibberellin is commercially used in brewing industry to produce alcohol by malting process of barley.
    It delay and improve storage life of the banana and grape fruits.
    It also promotes fruit setting.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 4

Question # 1

What are pacinian corpuscles?

  • Ans 1: Pacinian corpuscles situated deep in the body.These are also encapsulated neuron endings and receive the deep pressure stimulus.Those located in the limbs probably from a basis for vibration sense.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 5

Question # 1

Name various structural that protect our brain.

  • Ans 1: Following are the structures which protect our brain
  • Ans 2: skull
  • Ans 3: Meninges(though membrane)
  • Ans 4: Cerebrospinal fluid which act as shock absorber.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 6

Question # 1

Differentiate between kineses and taxes.

  • Ans 1: Kineses: kineses is a behavior in which an organism changes the speed of random movement which helps them to survive in the environment.
  • Ans 2: Taxes: in contrast to kineses a taxis is a directed movement either towards or away from a stimulus.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 7

Question # 1

Write down the role of hypothalamus in chemical coordination.

  • Ans 1: It is a part of fore brain.It is here that many of the sensory stimuli of nervous system are converted into hormonal responses.It is believed that oxytocin and ADH are produced in hypothalamus.
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12th Class Biology Chapter 17 Short Questions

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