ROOT:-
The root is the underground part of the plant which is non-green in color. It
does not bear leaves or buds, but it has a growing point or root tip by which it
increases in length. The tip is protected by a strong root cap. A little above
the root cap is a region which has very fine root hairs which help the root to
absorb water and salts from the soil. Some roots have one thick main root from
which branch roots grow. Such roots, like carrots and radishes, are called tap
roots.
In some plants, like grass, many branched roots of the same size grow out at the
same time. Such roots are called fibrous roots.
Some roots, like the onion bulb, grow directly from the stem. These are called
adventitious roots.
FUNCTION OF THE ROOTS:-
A root fixed the plant firmly in the soil. It absorbs water and mineral salts
from the soil. A root may store food as well.