MCQ Detailed View

The human eye is a highly specialized sensory organ that detects light and allows us to see the world around us. Among its different parts, the retina is known as the sensitive layer of the eye because it contains special cells that respond to light and convert it into electrical signals for the brain to interpret as images.The retina is located at the back of the eye and is made up of millions of photoreceptor cells called rods and cones.

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  Rods are highly sensitive to dim light and help with night vision but do not detect color.

  
  


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  Cones function in bright light and detect different colors, enabling sharp and detailed vision.

  
  

When light enters the eye, it passes through the cornea, lens, and vitreous humor, eventually reaching the retina. The photoreceptor cells capture light rays and convert them into nerve impulses that travel through the optic nerve to the brain, allowing us to see.

The other options listed are different eye structures:

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  Choroids: A layer rich in blood vessels that supplies oxygen and nutrients to the retina but is not the light-sensitive layer itself.

  
  


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  Sclerotic (Sclera): The tough, white outer layer of the eye that protects its inner parts.

  
  


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  Cornea: The transparent, outermost layer that allows light to enter the eye but does not process vision directly.

  
  

The retina is extremely delicate, and any damage to it, such as from retinal detachment, diabetes, or excessive light exposure, can lead to partial or complete vision loss. Its sensitivity to light is what makes it the primary sensory layer of the eye, essential for all visual experiences.

Thus, the retina is the sensitive layer of the eye, making Option 3 the correct answer.