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

What do you Know about saltatory nerve?

  • Ans 1: In myelinated neuron the nerve impulse jump from on node to another node (node of Ranvier).It is called salutatory nerve impulse.
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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 do you Know about saltatory nerve?

  • Ans 1: In myelinated neuron the nerve impulse jump from on node to another node (node of Ranvier).It is called salutatory nerve impulse.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 2

Question # 1

Compare photoreceptors with chemoreceports.

  • Ans 1: Chemoreceptors These are sensitive for chemical changes.These are for smell,taste and for blood carbon dioxide and oxygen,glucose,amino acids and fatty acids(receptors in hypothalamus)
  • Ans 2: Photoreceptors Electromagnetic receptors or photoreceptors respond to stimuli of light for example in eyes,rods and cones
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12th Class Biology Chapter 17 Short Questions Preparation - Set 3

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 4

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 5

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 6

Question # 1

Give the name of structural components of limbic system.

  • Ans 1: Limbic system includes hypothalamus,hippocampus and amygdala.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 7

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

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