With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?

1.	Increasing atmospheric CO2 concentration up to 0.05% can enhance the CO2 fixation rate
2.	C3 plants respond to higher temperatures with enhanced photosynthesis while C4 plants have much lower temperature optimum
3.	Tomato is a greenhouse crop that can be grown in CO2 enriched atmosphere for higher yield
4.	Light saturation for CO2 fixation occurs at 10% of full sunlight

Phosphoenol pyruvate (PEP) is the primary CO₂ acceptor in:
1. C₄ plants
2. C₂ plants
3. C₃ and C₄ plants
4. C₃ plants

Water-soluble pigments found in plant cell vacuoles are:

Emerson’s enhancement effect and red drop have been instrumental in the discovery of?

In photosynthesis, the light-independent reactions take place at?

1. Thylakoid lumen

2. photosystem I

3. photosystem II

4. Stromal matrix

Cyclic -photophosphorylation results in the formation of:
1. NADPH
2. ATP and NADPH
3. ATP, NADPH, and O₂
4. ATP

In the leaves of C₄ plants, malic acid formation during CO₂ fixation occurs in the cells of:
1. mesophyll
2. bundle sheath
3. phloem
4. epidermis