Q3 of 32 Page 120

Which cells of the retina enable us to see coloured objects around us?

The cone cells present inside the retina enable us to see coloured objects around us. They are photoreceptor cells of the eyes of the vertebrates which work best in relatively bright light.


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1

Rearrange the following in the correct order of involvement in electrical impulse movementSynaptic knob, dendrites, cell body, Axon terminal, Axon

 2

Comment upon the role of ear in maintaining the balance of the body and posture.

 4

Arrange the following in the order of reception and transmission of sound wave from the ear drum: Cochlear nerve, external auditory canal, ear drum, stapes, incus, malleus, cochlea.

 5

During resting potential, the axonal membrane is polarised, indicate the movement of +ve and –ve ions leading to polarisation diagrammatically.