"Kranz anatomy" is present in

1. All photosynthetic plants

2. Only C₃ plants

3. Only succulent plants

4. Only C₄ plants

Where exactly is, the PEP case found?
a. Only Mesophyll cells
b. Bundle Sheath cells
c. both a and b
d. Passage cells

In the diagrammatic representation of the Hatch and Slack pathway, A and B respectively represent:

1. Mesophyll cells and Bundle sheath cells

2. Bundle sheath cells and Mesophyll cells

3. Bundle sheath cells and Palisade cells

4. Mesophyll cells and Guard cells

Phosphoenol pyruvate (PEP) is the primary CO₂ acceptor in

(1) C₃ -plants 

(2) C₄ -plants

(3) C₂ -plants

(4) C₃ and C₄ -plants

The step of decarboxylation during C4 cycle occurs in:
a. Only Mesophyll cells
b. Bundle Sheath cells
c. both a and b
d. Passage cells

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

(1) Light saturation for CO₂-fixation occurs at 10% of full sunlight.

(2) Increasing atmospheric CO₂ concentration upto 0.05% can enhance the CO₂-fixation rate

(3) C₃ plants respond to higher temperature with enhanced photosynthesis, while C₄ plants have a much lower temperature optimum.

(4) Tomato is a greenhouse crop, which can be grown in a CO₂-enriched atmosphere for higher yield. 

The first carbon dioxide fixation product of C₄ plant is 

(1) Oxaloacetic acid

(2) ribulose biphosphate

(3) phosphoenol pyruvate

(4) phosphoglyceric acid.

Select the incorrect match from the following

1. One Calvin cycle – Requires 3 ATP and 2 NADPH
2. ${\mathrm{C}}_4$ plant – Shows slower process of carbon fixation
3. ${\mathrm{C}}_3$ plants – 20-25°C is optimum for photosynthesis
4. Hatch and Slack – Primary ${\mathrm{CO}}_2$ acceptor pathway is phosphoenolpyruvate

What is incorrect about bundle sheath cells-
a. Multilayered
b. large number of chloroplasts
c. Intercellular spaces
d. Thick walls

In C${}_4$ plants CO${}_2$ are reduced into sugar is : 

1. Mesophyll cells

2. In bundle sheath cells

3. In spongy parenchyma

4. Both A & B