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 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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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 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)
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

Give role of human gut as endocrine tissue.

  • Ans 1: Human gut act as endocrine gland. Important hormones produced by gut are Gastrin: This hormone is produced by mucosa of pyloric region of the stomach. It stimulates the production of gastric juice. It produced under the influence of protein in the food.
  • Ans 2: Secretin: It produced from the duodenum when the acidic food from the stomach touches its lining. Affect the pancreas to produce and secrete pancreatic juice and also affect rate of bile production in the liver.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 4

Question # 1

Give the role of insulin and glucagon.

  • Ans 1: Insulin controls the blood sugar level by different ways.It may be as
  • Ans 2: By converting glucose in to glycogen
  • Ans 3: By converting glucose in to proteins or fats
  • Ans 4: By increasing its utilization in the cell
  • Ans 5: By inhibiting the conversion of glycogen in to glucose
    Glucagon increases the blood sugar level. This is done by converting stored glycogen in to glucose.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 5

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 6

Question # 1

Write four similarities of nervous and chemical coordination.

  • Ans 1: Similarities are as follow
  • Ans 2: Both system help in co-ordination.
  • Ans 3: both are homoeostatic in function.
  • Ans 4: Both release chemical messenger in extracellular space of body.
  • Ans 5: Both systems synthesize chemical messengers
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12th Class Biology Chapter 17 Short Questions Preparation - Set 7

Question # 1

How ca++concentration in human blood is regulated?

  • Ans 1: Calcium level in human is controlled by the paratharmone. Low level of calcium ions in the blood stimulate parathyroid directly to increase the parathormone production whereas high level of calcium ions in the blood suppresses its release.
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12th Class Biology Chapter 17 Short Questions

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