Process of Photosynthesis

Q.

What happens to stomata if a plant lacks water?

Q.

Which part of the plant usually has stomata?

1. Roots

2. Leaves

3. Fruits

4. Flower

Q. Carbohydrates are found in leaves write an equation to show how it is formed in the presence of Sunlight

Q. Explain the process of Photosynthesis in plants. List four factors which influence this processand describe how each of them affects the rate of the photosynthesis process.

Q. Transpiration process is slower than evaporation.

1. True
2. False

Q.

The dark reaction or Calvin-Benson cycle:

1. Fixes water to make light

2. Converts water into oxygen to generate ATP

3. Fixes carbon dioxide to make glucose

4. Fixes water to make glucose

Q.

The correct sequence of photosynthesis in green plants is :

1. Absorption of light by Chlorophyll → Splitting of water to H₂ and O₂ → Reduction of CO₂ → Carbohydrate formation

2. Splitting of water to H₂ and O₂ → Reduction of CO₂ → Absorption of light by Chlorophyll → Carbohydrate formation

3. Splitting of water to H₂ and O₂ → Absorption of light by Chlorophyll → Reduction of CO₂ → Carbohydrate formation

4. Absorption of light by Chlorophyll → Reduction of CO₂ → Splitting of water to H₂ and O₂ → Carbohydrate formation

Q.

Consider the diagram below which represents photosynthetic reactions. Choose the option that correctly matches the names to 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) Carbon dioxide, (iii) Oxygen; chlorophyll is used in b-Calvin Benson cycle

2. (i) Water, (ii) Oxygen, (iii) Carbon dioxide; chlorophyll is used in a-Light reactions

3. (i) Carbon dioxide, (ii) Oxygen, (iii) Water; chlorophyll is used in a-Light reactions

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

Q.

The correct sequence of photosynthesis in green plants is:

1. Absorption of light by chlorophyll → Splitting of water to 2H⁺ and [O] → Reduction of CO₂ → Carbohydrate formation

2. Splitting of water to 2H⁺ and [O] → Reduction of CO₂ → Absorption of light by Chlorophyll → Carbohydrate formation

3. Splitting of water to 2H⁺ and [O] → Absorption of light by Chlorophyll → Reduction of CO₂ → Carbohydrate formation

4. Absorption of light by Chlorophyll → Reduction of CO₂ → Splitting of water to 2H⁺ and [O] → Carbohydrate formation

Q.

Dark reaction occurs in

1. Grana

2. Stroma

3. Both A and B

4. None of the above

Q. What is transpiration

Q. The green pigment present in the plant is ___________

[Review question: Pg. No: 231]

1. Carotenoids
2. Porphyrin
3. Anthocyanins
4. Chlorophyll

Q. The green pigment present in the plant is ___________

[Review question: Pg. No: 231]

Q. Photosynthesis converts energy X into energy Y.
a) What are X and Y?
b) Green plants are autotrophic in their mode of nutrition. Why?

Q.

Consider the diagram below which represents photosynthetic reactions. Choose the option that correctly matches the names to 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 a-Light reactions

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

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

4. (i) Carbon dioxide, (ii) Oxygen, (iii) Water; chlorophyll is used in a-Light reactions

Q. Stomata are present on _______ of leaves in water lily.

1. Upper surface
2. Lower surface
3. Both A and B
4. Stomata are absent