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11th Standard Zoology - Neural Control and Coordination English Medium Free Online Test One Mark Questions 2020 - 2021

11th Standard

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Zoology

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. Which structure in the ear converts pressure waves to action potentials?

    (a)

    Tympanic membrane

    (b)

    Organ of Corti

    (c)

    Oval window

    (d)

    Semicircular canal

  2. Assertion: The imbalance in concentration of Na+, K+ and proteins generates action potential.
    Reason: To maintain the unequal distribution of Na+ and K+, the neurons use electrical energy.

    (a)

    Both Assertion and Reason are true and Reason is the correct explanation of the Assertion.

    (b)

    Both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.

    (c)

    Assertion is true, but Reason is false.

    (d)

    Both Assertion and Reason are false

  3. The respiratory centre is present in the

    (a)

    Medulla oblongata

    (b)

    Hypothalamus

    (c)

    Cerebellum

    (d)

    Thalamus

  4. Which of the following statements is wrong regarding conduction of nerve impulse?

    (a)

    In a resting neuron, the axonal membrane is more permeable to K+ ions and nearly impermeable to Na+ ions.

    (b)

    Fluid outside the axon has a high concentration of Na+ ions and low concentration of K+, in a resting neuron.

    (c)

    Ionic gradients are maintained by Na-K pumps across the resting membrane, which transport 3Na ions outwards for 2K+ into the cell

    (d)

    A neuron is polarized only when the outer surface of the axonal membrane possess a negative a charge and its inner surface is positively charged

  5. When the potential across the axon membrane Is more negative than the normal resting potential, the neuron is said to be in a state of

    (a)

    Depolarization

    (b)

    Hyperpolarization

    (c)

    Repolarization

    (d)

    Hypopolarization

  6. The sleep and wake cycle is controlled by __________ gland.

    (a)

    Pituitary

    (b)

    Pineal

    (c)

    Thymus

    (d)

    Adrenal

  7. Foramen of Munro corresponds to _____________ Ventricle.

    (a)

    First

    (b)

    Third

    (c)

    Second

    (d)

    Fourth

  8. Pick out the gland which is found in the ear

    (a)

    Ceruminous glands

    (b)

    Lachrymal gland

    (c)

    Ciliary gland

    (d)

    Salivary gland

  9. Facial nerve is a _________ nerve. 

    (a)

    Sensory

    (b)

    Mixed

    (c)

    Motor

    (d)

    Efferent

  10. The ________ lobe of the cerebrum controls visual processing.

    (a)

    Parietal

    (b)

    Frontal

    (c)

    Occipital

    (d)

    Temporal

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