The evolution of C4 photosynthetic system is probably one of the strategies for:

1. maximizing the availability of oxygen in spite of continuing high amount of water loss
2. maximizing availability of water in spite of continuing high amount of carbon dioxide loss
3. reducing the amount of water loss but leads to decreased availability of carbon dioxide
4. maximizing the availability of carbon dioxide while minimizing water loss
Subtopic:  Transpiration & Guttation | Photosynthesis Transpiration Compromise & Mineral Translocation |
 79%
From NCERT
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Control points where a plant adjusts the quantity and types of solutes that reach the xylem are:
1. Suberised casparian strips in the endodermis
2. Sclerenchyma of the pericycle
3. Transport proteins of endodermal cells
4. Root hair cells
Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
 51%
From NCERT
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