Question
Name an old age eye defect. Why is it caused?
✓
Answer
Presbyopia is an age-old eye defect. In this condition, the lens loses flexibility resulting in far-sightedness.
Cataract is also very common in old people, the cornea becomes opaque and the vision is cut down even to blindness.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The diagram given alongside is that of a developing human foetus in the womb. Study the same and answer the questions that follows:
Name the parts ‘1’ to ‘5’ indicated by guidelines
Name the parts ‘1’ to ‘5’ indicated by guidelines
"Human activities are harmful to the balance of nature." Comment.
In summer the urine is slightly thicker than in winter explain the reason.
Give one important difference between transpiration and evaporation.
Mention three functions of the placenta.
List any three major factors that accelerate the rate of transpiration.
Suggest any three steps which may be taken towards controlling the rapid rise in human population in India.
The diagram alongside is the vertical section of female reproductive organs. Study the diagram and answer the questions that follow:
(i) Name the fully developed part of ovary containing the ovum.
(ii) Name the organ of the female body in which the foetus develops.
(iii) What is ovulation?
(iv) Which two hormones are secreted by ovary?
(i) Name the fully developed part of ovary containing the ovum.
(ii) Name the organ of the female body in which the foetus develops.
(iii) What is ovulation?
(iv) Which two hormones are secreted by ovary?
Which parts of the alimentary canal produce hormones?
Why is circulatory system also known as transport system?