What do C4 plants do?

Answer 1

C4 plants separate the steps of carbon fixation in two anatomically different cells.

#CO_2# uptake in C4 plants varies from C3 plants in which forms a 4-carbon molecule. Additionally C4 plants have the steps of carbon fixation separated in two anatomically different cells. This is different in comparison to CAM plants which separate the steps of carbon fixation temporally.

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Answer 2

Penelope Adams

C4 plants have an adaptation that allows them to minimize water loss through transpiration and maintain higher rates of photosynthesis compared to C3 plants in arid environments. This adaptation allows C4 plants to fix carbon dioxide efficiently even in hot and dry conditions. The pathway involves an initial fixation of carbon dioxide into a four-carbon compound in the mesophyll cells, which is then shuttled to bundle-sheath cells where it undergoes the Calvin cycle for further processing.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.