|Table of contents
|Food: Necessity of Life
|How Do Plants Make Their Food?
|Importance & Structure of a Leaf
|What Happens to the Food Made by the Plant?
|Interdependence of Plants and Animals
|Some Unusual Plants
|Plants That Do Not Make Their Food
|Scientist in Focus
Every living thing needs food. It helps us to grow and carry out daily life activities.
Food is the basic necessity of life.
A squirrel gnaws nuts when it is hungry but plants need to make their own food to satisfy their hunger.
Most plants prepare food by the process of photosynthesis.
Photosynthesis in Plants
During the process of photosynthesis, food is prepared in the form of sugar. Oxygen is given out by the leaves.
Leaves provide food and air to help a plant stay healthy and grow.
Stomata in Leaves
Koalas consume eucalyptus trees
There are some plants that are different from the usual green plants. Let’s find out more about them.
Scientist in Focus
Jan Ingenhousz (1730-1799),
a Dutch physiologist, biologist and chemist is best known for the discovery of photosynthesis. In 1779, he discovered that in the presence of light, bubbles come out from green parts of the plants while in shade these bubbles stop. He identified this gas as oxygen. He also discovered that plants give off carbon dioxide in the dark.
|1. How do plants make their food?
|2. What is the importance and structure of a leaf?
|3. What happens to the food made by the plant?
|4. How are plants and animals interdependent?
|5. Are there any plants that do not make their food?