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प्रश्न
Answer the following questions briefly:
Explain how the human eye adapts itself to bright light and dim light.
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उत्तर
The amount of light intering the eye is controlled by muscles of iris. The pupil become layer in less light to allow more light to goin and in bright light it consiricts to restrict the amount of light going in.
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संबंधित प्रश्न
Name the three types of nerves which constitute the peripheral nervous system.
The spinal cord originates from:
Multiple choice question. Tick (✓) the correct choice:
The coloured part of the eye is called
- retina
- iris
- lens
- pupil
State whether the following statement is true (T) or false (F):
The dermis of the skin is made up of epithelial cells.
Name the following:
The peripheral matter of the brain.
Distinguish between the following pair of words:
Nervous system and hormonal system
Draw the following diagram:
Draw a neat labeled diagram of a neuron.
Explain the Term: Reflex action
Name the following:
Unit of the nervous system is
Mention, if the following statement is True or False
The nerve impulse in the eye develops due to the chemical changes brought about in the sensitive cells (rods and cones) by the light energy of the image.
