What Is Dark Reaction

Q.

What are thylakoids.

Q. Light independent reactions of photosynthesis occurs in

1. grana
2. thylakoid membrane
3. stroma
4. inner membrane of chloroplast

Q. Light independent reactions of photosynthesis occurs in

1. grana
2. thylakoid membrane
3. stroma
4. inner membrane of chloroplast

Q. During Calvin cycle, ATP is not utilised during _______.

1. reduction
2. regeneration
3. carboxylation
4. formation of triose phosphate

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

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

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

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

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. The enzymes required for carbon fixation are located only in the grana of chloroplasts
4. In green plants, both PS-I and PS-II are required for the formation of $NADPH+H^{+}$

Q. Choose the incorrect statement about Calvin cycle:

1. It begins with the carboxylation of $\mathrm{RuBP}$
   
2. 3-Phosphoglycerate is the first ${\mathrm{CO}}_2$ fixation product
   
3. One, out of six $3-\mathrm{PGA}$ molecules, is used for production of glucose
   
4. PEP carboxylase fixes ${\mathrm{CO}}_2$ in $C_3$ cycle
   

Q.

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

1. light-dependent

2. light-independent

3. glycolytic

4. Krebs cycle

Q. In a chloroplast, enzymatic reaction to synthesize sugar takes place in

1. the lumen of the thylakoids
2. stroma
3. ribosome
4. stroma lamellae

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

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

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.