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 are the commercial applications of cytokinins?

  • Ans 1: It is used to delay age of fresh leaf crops and keep flowers fresh.It can also be used to break dormancy of seeds of some plants.
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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 are the commercial applications of cytokinins?

  • Ans 1: It is used to delay age of fresh leaf crops and keep flowers fresh.It can also be used to break dormancy of seeds of some plants.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 2

Question # 1

What do you know about parasympathetic nervous system?

  • Ans 1: A few cranial nerves including the vagus nerve together with the fibre from bottom portion of spinal cord from PNS.It promotes all the internal responses which are associated with the relaxes state i.e,contraction of pupil,promotes food digestion and retards heart beat.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 3

Question # 1

Write down four functions of auxin.

  • Ans 1: Function of auxin are
  • Ans 2: Auxin promote cell elongation
  • Ans 3: It promotes cell division in cambium
  • Ans 4: It can induce parthenocarpy
  • Ans 5: It promotes apical dominance
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12th Class Biology Chapter 17 Short Questions Preparation - Set 4

Question # 1

What are the function of parathyroid glands? Or What are two functions of parathyroid gland?

  • Ans 1: Parathyroid gland produces paratharmone which control calcium level in the blood.Its over activity cause demineralization of bones while under activity cause muscular tetany.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 5

Question # 1

What is chlorosis?

  • Ans 1: Yellowing Of plant leaves due to deficiency of chlorophyll is called chlorosis.It may be due to deficiency of nitrogen, magnesium or when plant is kept in dark for long time.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 6

Question # 1

What is meant by resting membrane potential?

  • Ans 1: A typical neuron at rest is more positive outside than inside the cell membrane.This net difference in charge between the inner and outer surface of a non-conducting neuron is called resting membrane potential.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 7

Question # 1

Differentiate between resting membrane potential and active membrane potential.

  • Ans 1: Resting membrane potential A typical neuron at rest is more positive outside than inside the cell membrane.This net difference in charge between the inner and outer surface of a non-conducting neuron is called resting membrane potential.
  • Ans 2: Active membrane potential In active membrane potential inner membrane surface become more positive than outside.it is from of impulse.This change is so brief that only a portion of it is in active membrane potential.
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12th Class Biology Chapter 17 Short Questions

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