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 "

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Biology - 12th Class Biology Chapter 17 Short Questions Preparation

Question # 1

Define habituation. Give its example.

  • Ans 1: It is the simplest from of learning and involves modification of behavior through decrease in response due to repeated stimuli e.g Rodents respond to alarm cells by others in their groups,if these calls are continued and no danger is confirmed further calls may be ignored.
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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 habituation. Give its example.

  • Ans 1: It is the simplest from of learning and involves modification of behavior through decrease in response due to repeated stimuli e.g Rodents respond to alarm cells by others in their groups,if these calls are continued and no danger is confirmed further calls may be ignored.
Submit

12th Class Biology Chapter 17 Short Questions Preparation - Set 2

Question # 1

Write four important roles of ethylene.

  • Ans 1: Ethene inhibits root growth.

  • Ans 2: Break dormancy of buds
  • Ans 3: promote fruit ripening.
  • Ans 4: Promote flowering in pineapple.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 3

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 4

Question # 1

What is meant by division of labour ?

  • Ans 1: Division of labour means a specific type of cells can perform a specific type of function.Like muscle cells contract and relax,glandular cells produce secretions, phloem can transport food.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 5

Question # 1

Define biorhythms and gives its types.

  • Ans 1: In living organisms the behavioral activities occur at regular intervals which are called biorhythms.
    1. Circannual rhythms (365 days)
    2. Diurnal rhythms (24 hours)
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12th Class Biology Chapter 17 Short Questions Preparation - Set 6

Question # 1

Which Hormones are secreted by posterior lobe of pituitary gland?

  • Ans 1: Antidiuretic hormone and oxytocin are secreted by the posterior lobe of pituitary gland.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 7

Question # 1

Write a note on Alzheimer's disease.

  • Ans 1: It is characterized by decline in brain function.Its symptoms are similar to those of dememntia(memory loss).There is genetic predeposition to the disease in some people.So it runs in families.
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17th Chapter

12th Class Biology Chapter 17 Short Questions

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