Page 24 - Science class 4

This carbon dioxide is used by the plants to make their food. This is why, we

need to take good care of plants and we should not cut down plants and trees.

Quenching Scientific Thirst
Quenching Scientific Thirst
Quenching Scientific ThirstQuenching Scientific Thirst
Quenching Scientific Thirst
Quenching Scientific Thirst
Quenching Scientific Thirst
Quenching Scientific ThirstQuenching Scientific Thirst
Quenching Scientific Thirst
Quenching Scientific Thirst
Quenching Scientific Thirst
The atmosphere contains very, little amount of carbon dioxide. Plants
get most of it from animals who breathe it out.
SOME UNUSUAL PLANTS

Mushrooms moulds, and fungi are non-green plants. They do not have
chlorophyll. They cannot made their own food. They get their food from the

decaying dead plants and animals.

Mushrooms Croton Plant Dodder Plant Cactus

Some plants like croton has colourful leaves (mostly red). These plants have
green colour but that is hidden by the other colour. These plants are able to

prepare their own food in the presence of sunlight.

Plants like dodder (Amarbel) cannot make their own food. They depend on

other green plants. They use the food prepared by other green plants.

Some plants like the cactus do not have leaves. Then, where is their food
made? It is made in their green stems. Cactus is generally found in the desert

area where very less amount of water is found. Cactus uses the food stored in

fleshy stems for its growth and survival even in the absence of water.

Keeping Update

¤ Starch is stored in the form of sugar.

th
¤ 5 June is the World Environment Day, celebrated throughout the world
by planting more and more plants.