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

Match each item in Column I with one item in Column II regarding plant adaptation to water scarcity and choose your answer from the codes given below:

                                                                    
Codes:

Match each item in Column I with one item in Column II regarding C4 plants and chose your answer from the codes given below:

Codes:

Examine the figure given below and select the wrong option

1. A - Present in only grana lamellae.

2. B - involves down hill movement of electron in terms of oxidation reduction potential .

3. C - Absorbs 700 nm light.

4.  The electrons return back to the reaction center.

The process which makes a major difference between C₃ and C₄ plants is:

Water-soluble pigments found in plant cell vacuoles are:

C₄-plants are more efficient in photosynthesis than C₃-plants due to: