Draw a neat, labelled diagram to show that oxygen is released during photosynthesis.

Where are Hydathodes located?

Ahmed had a severe throat infection. After a few days he developed an earache too. What could be the reason for the pain in his ears? Explain.

Mr. Sharma is a 76 year old man. His vision was gradually becoming blurred. He consulted an eye doctor and it was diagnosed as cataract.

(a) Which part of the eye does cataract affect?

(b) Why does the vision become blurred?