Q164 / 200 · NEET 2008 (Screening) · Zoology

Cornea transplant in humans is almost never rejected. This is because

  • A
    its cells are least penetrable by bacteria
  • Correct answer
    B
    it has no blood supply
  • C
    it is composed of enucleated cells
  • D
    it is a non-living layer

Solution

Cornea is a transparent portion that forms the anterior one-sixth of the eyeball. The cornea admits and helps to focus light waves as they enter the eye. It is avascular, $i e$, has no blood supply therefore, cornea transplant in human is almost never rejected.

Hence, the correct answer is option: 'B'.

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