What is Dark reaction

Q.

Identify the steps in photosynthesis from the following pictures:

1. photolysis of water; reduction of CO₂

2. oxygen production; carbohydrate storage

3. hydrogen release; starch storage

4. water absorption; carbon fixation

Q.

Chlorophyll in the chloroplast is located in?

Q.

Does C₄ photosynthesis occur at night?

Q.

Where does the dark reaction take place?

Q.

What is the composition of chloroplast?

Q. Site of dark reaction of photosynthesis is

1. Outer membrane of the chloroplast
2. Inner membrane of the chloroplast
3. Stroma of the chloroplast
4. Grana of the chloroplast

Q. Autolysis is performed by _______.

1. Nucleus
2. Endoplasmic Reticulum
3. Golgi Apparatus
4. Lysosomes

Q. During photosynthesis, light is not necessary for

1. Electron transport
2. Photolysis
3. excitement of chlorophyll molecule
4. Reduction of $C{O}_2$ to the level of carbohydrate

Q. In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: In light reaction of photosynthesis, light is required for the functioning of PS I and PS II, and production of NADPH and ATP.
Reason: Dark reaction does not occur in light.

1. If assertion is true but reason is false.
   
2. If both assertion and reason are true and reason is the correct explanation of assertion.
   
3. If both assertion and reason are true but reason is not the correct explanation of assertion.
   
4. If both assertion and reason are false.

Q.

Which of the following statements about photosynthesis is true?

1. the light-dependent reactions can occur only in the light, the light-independent reactions only in the dark

2. photorespiration is more efficient at producing glucose than is photosynthesis

3. the light-dependent reactions produce the energy-rich compounds that are used to run the light- independent reactions

4. all of the above are true

Q. In photosynthesis, the light-independent reactions take place at:

1. Stromal matrix
2. Thylakoid lumen
3. Photosystem I
4. Photosystem II

Q. HOW DOES THE PHOTOSYNTHESIS PROCESS WORK?

Q.

The correct statement of dark reaction is

1. It occur in presence of light only

2. It occur in absence of light only

3. It is independent of light

4. All of these

Q. How many chloroplasts are found in the cell of clamydomonas

Q.

NADPH and ATP are used in the ______ reactions of photosynthesis.

1. light-dependent

2. light-independent

3. glycolytic

4. Krebs cycle

Q. In photosynthesis energy from light reaction to dark reaction is transferred in the form of:

1. ADP
2. ATP
3. Chlorophyll
4. RuDP

Q. Biosynthetic reaction of photosynthesis is also called dark reaction because

1. It occurs in dark
2. None of the above
3. It does not require light energy
4. Both 1 and 2

Q. Biosynthetic phase of photosynthesis Involves

1. Photolysis of water
2. Reduction of carbon dioxide to the level of organic compounds.
3. Photophosphorylation.
4. Activation of chlorophyll molecule.
   

Q. Which statement about photosynthesis is false?

1. The electron carriers involved in photophosphorylation are located on the thylakoid membranes
2. Photosynthesis is a redox process, in which water is oxidised and carbon dioxide is reduced
3. In green plants, both PS-I and PS-II are required for the formation of $NADPH+H^{+}$
4. The enzymes required for carbon fixation are located only in the grana of chloroplasts