$A$ little baby was playing in a park with his maid. Suddenly,he fell down and got a minor injury. The maid applied tincture of iodine on the wound.
$(a)$ Why did she apply tincture of iodine on the wound?
$(b)$ Name the solute and solvent present in tincture of iodine.
$(c)$ Enlist the values shown by the maid.

What is a $GM$ crop? Name any one such crop which is grown in India.

Group the following crops and tabulate them as energy-yielding,protein-yielding,oil-yielding,and fodder crops: Wheat,rice,berseem,maize,gram,oat,pigeon pea,sudan grass,lentil,soybean,groundnut,castor,and mustard.

Ria was studying about $DNA$ in her textbook,learning that $DNA$ molecules are responsible for constructing and organizing cells and are present as part of chromatin material in the nucleus to transfer hereditary information. Ria was confused about how she could know if she possesses all the hereditary information from her parents. Her mother explained that through their hair or cells,the $DNA$ of parents and a child can be matched.
$(a)$ What kind of qualities are shown by Ria's mother?
$(b)$ In which part of a cell is $DNA$ found? State its function.

Which one of the following fishes is a surface feeder?

State three methods by which you can control the growth of weeds in agricultural fields.