Photosynthesis

Q.

For photosynthesis green plants require____________.

1. chlorophyll only

2. carbon dioxide and water

3. sunlight

4. chlorophyll, sunlight, carbon dioxide and water

Q.

Photosynthesis takes place is the presence of :

1. heat
2. electricity
3. sunlight
4. negative catalyst

Q.

Plants and animals utilise solar energy to make food.

1. True
2. False

Q.

Define photosynthesis. What are the necessary conditions for photosynthesis?

Q.

Define photosynthesis. Name the site of photosynthesis in plants.

Q.

The immediate product of photosynthesis is glucose.

1. True
2. False

Q. Waste products produced by plants is/are

1. Water
2. CO${}_2$
3. All of the above
   
   
4. Oxygen

Q.

Can humans use photosynthesis?

Q.

What are the three main events of photosynthesis?

Q. Plants prepare their own food by the process called .

1. circulation
2. respiration
3. photosynthesis
4. breathing

Q. Photosynthesis is a chemical reaction that takes place in the presence of
[TEXTBOOK QUESTION -II(1)]

Q. Assertion (A): Plants help to purify air by taking in carbon dioxide.

Reason (R): Carbon dioxide is used in photosynthesis.

1. A is true and R is false.
2. A is false and R is true.
3. Both A and R are true and R is the correct explanation for A.
4. A and R both are true but R is not the correct explanation for A.

Q. Assertion (A): Plants help to purify air by taking in carbon dioxide.

Reason (R): Carbon dioxide is used in photosynthesis.

1. A is true and R is false.
2. A is false and R is true.
3. Both A and R are true and R is the correct explanation for A.
4. A and R both are true but R is not the correct explanation for A.

Q. Match the follwing animals with the place they get oxygen from.

1. Soil
2. Water
3. Land