CBSE  /  Class 10  /  Science  /  Control and Coordination

  • 1. 
    Which of the following statements is correct about receptors?

  • Gustatory receptors detect taste while olfactory receptors detect smell
  • Both gustatory and olfactory receptors detect smell
  • Auditory receptors detect smell and olfactory receptors detect taste
  • Olfactory receptors detect taste and gustatory receptors smell

  • 2. 
    Electrical impulse travels in a neuron from

  • Dendrite axon → axonal end → cell body
  • Cell body → dendrite → axon → axonal end
  • Dendrite → cell body → axon → axonal end
  • Axonal end → axon → cell body → dendrite

  • 3. 
    In a synapse, chemical signal is transmitted from

  • dendritic end of one neuron to axonal end of another neuron
  • axon to cell body of the same neuron
  • cell body to axonal end of the same neuron
  • axonal end of one neuron to dendritic end of another neuron

  • 4. 
    In a neuron, conversion of electrical signal to a chemical signal occurs at/in

  • cell body
  • axonal end
  • dendritic end
  • axon

  • 5. 
    Which is the correct sequence of the components of a reflex arc?

  • Receptors → Muscles → Sensory neuron → Motor neuron → Spinal cord
  • Receptors → Motor neuron → Spinal cord → Sensory neuron → Muscle
  • Receptors → Spinal cord → Sensory neuron → Motor neuron → Muscle
  • Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle

  • 6. 
    Which of the following statements are true?

  • (i) and (ii)
  • (i) and (iii)
  • (i) and (iv)
  • (i), (ii) and (iii)

  • 7. 
    Which of the following statements are true about the brain?
    (i) The main thinking part of the brain is hind brain. (ii) Centres of hearing, smell, memory, sight, etc. are located in fore brain. (iii) Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla in the hind brain. (iv) Cerebellum does not control posture and balance of the body.

  • (i) and (ii)
  • (i), (ii) and (iii)
  • (ii) and (iii)
  • (iii) and (iv)

  • 8. 
    Posture and balance of the body is controlled by

  • cerebrum
  • cerebellum
  • medulla
  • pons

  • 9. 
    Spinal cord originates from

  • cerebrum
  • medulla
  • pons
  • cerebellum

  • 10. 
    The movement of shoot towards light is

  • geotropism
  • hydrotropism
  • chemotropism
  • phototropism
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