EVS CLASS 4 PLANTS MAKE FOOD notebook work

PLANTS MAKE FOOD

KEY WORDS

Leaflets	Producers
Sugar	Photosynthesis
Glucose	Starch
Carbon dioxide	ChlorophyII
Pigment	Stomata
Sunlight

Define the terms

1.   Germination: It is the process by which a seed starts growing or developing into a new plant.

Question and Answers

Q-1 What is Photosynthesis?

Photosynthesis is the process in which a plant converts solar energy into useful chemical energy.

 Carbon dioxide + Water (in the presence of sunlight  and chlorophyll)

 

Gives           Oxygen + Glucose

Q-2 List the factors that influence the rate of photosynthesis in plants.

Ans- Three Factors affecting rate of photosynthesis in plants are:

1.   Sunlight

2.   Water

3.   Carbon dioxide in the air.

Q-3 Explain the statement: Water is a key component for the process of photosynthesis.

Ans: Without any of the component (water, carbon dioxide and sunlight) plant will be unable to make its food and cannot survive. So water is a key component for the process of photosynthesis.

Q-4 Little plants find it difficult to grow in rainforests. Give Reason.

Ans: As tall trees are found in abundance in rainforests, little plants can hardly receive sunlight for photosynthesis.

Q-5 If we find a way to keep stomata open at night, would that lead to higher rate of photosynthesis?

Ans: No, even if we find a way to keep stomata open at night, it would not lead to higher rate of photosynthesis in plants as plants require sunlight for photosynthesis which is not available.

Q-6 Which three important things are required by the plants to make food?

ANS 6