Page 7 - Science Class 06

1. The main func on of the leaf is to ____________.

a) store food b) develop leaflets c) transport food d) prepare food

2. Leaves are green due to the presence of green pigment called ____________.
a) Chlorophyll b) Pigment c) CO d) O 2
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3. Which of the following is not necessary for photosynthesis?
a) Chlorophyll b) Sunlight c) Oxygen d) Water

4. The food prepared by the plants is in the form of ____________.
a) proteins b) starch c) fibre d) fat

autotrophs. Since plants are the only source heterotrophs. They are also called

of food, so they are also called producers. consumers because they get their nutrients

Heterotrophs : All the other organisms that a er consuming plant products. For example;
depend on plants for their food, are called men, animals and non-green plants.

1. Why are plants called autotrophs?

2. Why are men called heterotrophs?
3. Why non-green plants are also called consumers?

SOURCES OF FOOD FOOD FROM PLANTS
Food is the fuel of life. Without food, You studied that plants store food in their

humans cannot survive. So, it is important leaves, roots, stems, seeds, fruits, etc. That
for us to know where our food actually is why we eat different parts of plants. Let’s
comes from. Like, did you know that cake is study.
actually made from food that comes from
Cereals : Cereals are the main source of
plants? Let us learn more about sources food because they fulfill most of our energy
of food. requirements. Some important cereals are

Well, there are two sources of food – plants rice, wheat, maize, sorghum, barley and
and animals. All of the food we eat comes millets. These are the main sources of
from either of these two sources. The energy as they contain carbohydrates in
processed food like chips, cakes, pizzas, large amount.

sandwiches, etc. that we eat in our daily Cereals are the seeds of different small
lives is a combina on of various ingredients plants called herbs. These plants have weak
that are sourced from either plants or
stems. The dura on between sowing and
animals. Let’s take a look at both. ripening of these plant is about four months.

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