Animals are living things. They eat food to grow big.
The whole body of an animal grows. It keeps on growing in size till it reaches adulthood.
Some animals are quite different from their parents at the time they are born. As they feed and grow, they change their shapes until they start looking like their parents.
Plants keep on growing all their lives. If you cut off the tip of a stem, new branches will grow from the sides.
The tips of the stem, roots, and leaves have special groups of cells that keep on dividing. This cell division makes the plant grow.
A plant grows at the tips. If you pull off the leaves of a twig, you will see tiny buds on it; each bud has a number of tiny leaves folded up inside. Buds can grow into branches or flowers. Buds at the tip of the stem help the stem grow long.
Potato is a swollen part of the stem of a plant. It grows in the soil. It has a lot of stored plant food in it. It is called a tuber. A potato has many eyes on it.
Each eye is a bud. The stored food in the potato helps the buds grow into new potato plants.
Potato Tuber (Eyes/Buds)
An onion is a bulb. It is made up of thick leaves which have a lot of stored plant food in them. There is a bud in the centre of the bulb. The bud grows to make an onion plant.
Onion Bulb