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 are neurotransmitters?Give it example.

  • Ans 1: Neurotransmitters are the chemicals which are secreted at neuron endings,which transfer nerve impluse from on neuron to another neuron e.g Acetylcholine,adrenaline,dopamine,serotonin.
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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 neurotransmitters?Give it example.

  • Ans 1: Neurotransmitters are the chemicals which are secreted at neuron endings,which transfer nerve impluse from on neuron to another neuron e.g Acetylcholine,adrenaline,dopamine,serotonin.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 2

Question # 1

Give two characteristics of hormones.

  • Ans 1: hormones are porteins in nature.

  • Ans 2: They help in the co-ordination of the organisms by activating the target cells of the body.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 3

Question # 1

Give two commercial application of ethane.

  • Ans 1: It is used to increase the speed of lates flow in rubber plant.it is also used for artificial ripening of fruits and to induce flowering in pineapple.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 4

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 5

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 6

Question # 1

What is the role of anti diuretic hormone(ADH)?

  • Ans 1: ADH secretion cause decrease in blood pressure,blood volume and osmotic pressure of the blood detected by osmoreceptors in the hypothalamus.It is mainly control the concentration of urine.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 7

Question # 1

Differentiate between nerve impulse and saltatory impluse.

  • Ans 1: Nerve impulse Nerve impulse is a wave of electrochemical changes which travels along the length of the neuron involving chemical reactions and movement of ions across the cell membrane.
  • Ans 2: Salutatory impulse In myelinated neurons the impluse jumps from node to node this is called saltatory impluse.
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12th Class Biology Chapter 17 Short Questions

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