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

What is reflex action?

  • Ans 1: Reflex action is a type of involuntary action.The direction of stimulus is from receptors to sensory neuron to associative neuron and then through motor neuron to the effectors.
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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

What is reflex action?

  • Ans 1: Reflex action is a type of involuntary action.The direction of stimulus is from receptors to sensory neuron to associative neuron and then through motor neuron to the effectors.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 2

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 3

Question # 1

Sketch and label sensory neuron.

  • Ans 1: Differentiate between axons and dendrites.
  • Ans 2: Dendrite It is cytoplasmic fiber of neuron which is smaller in size but many in number and conduct nerve impluse towards cell body.
  • Ans 3: Axon It is cytoplasmic fiber of neuron which is very long in size and one in number and conduct nerve impulse away from cell body.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 4

Question # 1

How brain is protected with various covers?

  • Ans 1: Cranium protects the brain.Beneath the cranium brain is protected by triple layer of meninges.Between the meninges there is filled cerebrospinal fluid which act as shock absorber.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 5

Question # 1

What are effectors?Give example.

  • Ans 1: Effectors are the organs which show response after receiving message from the associative neurons via motor neurons.For example muscles and glands.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 6

Question # 1

What is cerebrospinal fluid?Give its function.

  • Ans 1: Beneath the cranium,the brain and spinal cord are protected by triple layer of meninges.Between the layers of meninges the cerebrospinal fluid (CSF),similar in composition to blood plasma.
  • Ans 2: Its function is to bath the neurous of brain and spinal cord and it cushions against bumps and jolts.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 7

Question # 1

What is leutinnizing hormone(LH). Write its role

  • Ans 1: LH works with FSH to stimulate oestrogen secretion and rupture mature follicles to release ovum. It also causes leutinization of follicle after ovulation and along with prolactin maintains corpus leuteum.
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12th Class Biology Chapter 17 Short Questions

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