Process of Photosynthesis

Q. What is the real equation of photosynthesis? 6CO2 + 12H2O - 6O2 + C6H12O6 + 6H2O or 6CO2 + 6H2O - C6H12O6 + 6O2

Q.

Give reason for the following statements.
Carbon dioxide is necessary for photosynthesis.

Q.

What happens to sunlight in photosynthesis?

Q.

75. Give reason for

(c) Leaves of submerged aquatic plants contain wax coating.

Q. write the equation of photosynthesis and mark as well as validate from which molecule the by-product is obtained.

Q. The tiny openings in leaves that take in carbon dioxide are:

1. Phloem
2. Tracheids
3. Stomata
4. Xylem

Q. Plants make their own food by the process of .

1. respiration
2. chemosynthesis
3. photosynthesis
4. production

Q. Choose the correct answer from the four options given below in the statement. A plant is kept in a dark cupboard for about 48 hours, before conducting any experiment on photosynthesis to

1. remove chlorophyll from the leaves
2. ensure that the leaves are free from starch
3. remove starch from the plant
4. ensure that no photosynthesis occurs

Q.

The following diagram demonstrates a physiological process taking place in green plants. The whole set-up was placed in bright sunlight for several hours. Study the diagram and answer the questions that follows.​

​(i) What aspect of the physiological process is being examined?​

Q.

wat is H2A used in the Cornelius van Niel

Q. Which of the following molecule is not required for photosynthesis?

1. $C{O}_2$
2. $H_{2}O$
3. $O_2$
4. Chlorophyll

Q.

Which option correctly fills up the blanks in the following equation?

$\left(i\right)+Water\stackrel{Sunlight+\left(ii\right)}{\to }Glucose+\left(iii\right)$

1. (i) Oxygen, (ii) Starch, (iii) Chlorophyll

2. (i) Carbon dioxide, (ii) Chlorophyll, (iii) Oxygen

3. (i) Oxygen, (ii) Chlorophyll, (iii) Carbon dioxide

4. (i) Carbon dioxide, (ii) Chlorophyll, (iii) Oxygen

Q.

Consider the diagram below which represents photosynthetic reactions. Choose the option that correctly matches the labels (i), (ii), (iii). Also the option must match for the involvement of chlorophyll in a-Light reaction or b-Calvin-Benson Cycle.

1. (i) Water, (ii) Oxygen, (iii) Carbon dioxide; chlorophyll is used in the light reaction

2. (i) Carbon dioxide, (ii) Oxygen, (iii) Water; chlorophyll is used in the light reaction

3. (i) Oxygen, (ii) Water, (iii) Carbon dioxide; chlorophyll is used in the Calvin-Benson cycle

4. (i) Water, (ii) Carbon dioxide, (iii) Oxygen; chlorophyll is used in the Calvin-Benson cycle

Q.

The figure given below represents an experimental setup to study a physiological process in plants.​

(ii) Explain the process.​

​

Q.

Which of the following options is correct based on the statements given?

Statement 1: Gaseous exchanges in plants usually occur on the dorsal side of leaves.

Statement 2: Tiny pores called stomata facilitate this exchange.

Statement 3: The gases exchanged are carbon dioxide and water vapour only.

1. Only statements 1 and 3 are correct.

2. Only statement 2 is correct.

3. All statements are correct.

4. Only Statements 2 is correct.

Q. Photosynthesis is the natural process by which solar photons are converted into

1. Chemical energy
2. Thermal energy
3. Gravitational Energy
4. Electrical Energy

Q. In which of the following processes does water and carbon dioxide get formed as byproducts and energy is also released.​

1. Both A and B​
2. Respiration
3. Photosynthesis

Q. Photosynthesis generates which of the following nutrients?

Q. Complete the following statements by choosing the appropriate option for each blank:
The molecule that undergoes reduction to form glucose during photosynthesis is ________.

[1 Mark ]

1. $H_{2}O$
2. $O_2$
3. $C{O}_2$
4. $NADPH$

Q. Ethylene closes stomata during ​droughts and reduces water loss.​

1. True
2. False