Saturday, January 16, 2016


It was a holiday. Abdul was helping his Abbu in the garden. Abbu was clearing the dried leaves and grass from the vegetable beds. Abdul started to pull out the grass from one of the beds.
He found that it was not easy to pull out even the small grass. His hands became red by the effort. In trying to pull out grass,
Abdul knocked down a stick that was supporting the pea plant. The delicate stem of the pea plant broke.

Abbu said, “Why are you pulling the grass? The roots of the grass are strong. You will have to dig them out.” Abdul carefully dug out the plant.
He then saw that the roots of the grass plant were longer and much more spread out than the part of the plant above the ground. The stick which was stuck in the ground fell very easily. It was difficult to pull out a small grass.
Imagine how deep and spread out the roots of these are. Most of the plants have the same basic parts. Each parts has its own work to do. These parts work together and keep the plant alive.
A plant can be divided into two parts.they are shoot and root. The part of the plant which is above the soil is called the shoot. The part of the plant that grow under the soil is called the root.
Children you cannot see it above the ground. Some plants have a thick main root below the stem. It goes deep into the soil.
Several thinner side roots grow from the main root. Such root are taproots. Examples are baslsam, hibiscus, bean and mustrard have tap roots.
Grass has no main root. It has a number of tiny roots attached to the end of the stem. It looks like abunch of roots these are called fibrous roots.
Let us see wat orrts do?
If a plant didn’t have roots, they become unsteady and fall. Roots fix a plant firmly to the soil.
Plants need water and salts from the soil. Roots take these and send them up to the stem and leaves. Roots of some plants such as carrot, radish and beetrrot, store the food prepared by the plant.
After three days, Abdul saw that one broken part of the pea plant had dried. Guess which part would have dried up? Why ? Abbu remembered that he had to send some radish home. He started to pull the radish out of the soil.

Abdul wondered whether these were also roots. Only a few radish were pulled when there was suddenly a strong wind and rain. Both of them picked up the radish and ran. They had just reached home when a branch of the neem tree in the courtyard broke and fell.
In fact, Abbu was lucky to have missed by only a few inches. Despite the strong wind the tree remained firm on the ground. They both sat down to have tea with Ammi .
Abbu said to Abdul, “The plants were getting dry. Now that it has rained, we will not have to water the plants. We can now sit and play ludo.”
Nowadays Abdul keeps thinking about all kinds of plants that he sees. Abdul saw a plant growing out of a wall in school. He wondered.
Plants absorb water through their entire surface – roots, stems and leaves. However, the majority of water is absorbed by root hairs. They are in close contact with the thin film of water surrounding the soil particles.
The cell wall of the root hair is permeable to water and minerals, Because of this osmosis occurs and the water is absorbed by the root hairs through cell membranes from the soil.
Abdul saw a huge tree that had fallen on the roadside. He remembered the neem tree in his courtyard. He could see some of its broken roots.

Unusual Roots
Have you swung from a banyan tree? What did you hold to swing? What looks like the hanging branches are actually the roots of the tree. These grow down from the branches until they reach the ground. These roots are like pillars that provide strong support to the tree.
The banyan tree also has roots under the ground, just as other trees have.
There is a law against cutting trees. There was a tree growing close to a lamp post. The tree was so full of leaves that the light of the bulb was blocked.
People felt that the branches of the tree needed to be trimmed. Before they do this, they need to take written permission from the government office.
Desert Oak is a tree that is found in Australia. It grows almost as tall as your classroom wall. It has very few leaves. Guess how deep its roots go down? Imagine the length of about 30 such trees laid down in a line end to end, one after another.
That is how long the roots of this tree can be. These roots go deep into the ground till they reach water. This water is stored in the tree trunk.
When there was no water in the desert, the local people use to put a thin pipe into the trunk of the tree, to drink this water.

No comments: