The level of CO_2 available in the atmosphere | vedclass

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(B) The concentration of $CO_2$ is a major factor affecting the rate of photosynthesis. $C_3$ plants show an increase in the rate of photosynthesis at

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$C_3$

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(B) The concentration of $CO_2$ is a major factor affecting the rate of photosynthesis. $C_3$ plants show an increase in the rate of photosynthesis at higher $CO_2$ concentrations because their enzyme $RuBisCO$ has a lower affinity for $CO_2$ and also acts as an oxygenase. In contrast,$C_4$ plants show saturation at about $360 \mu L L^{-1}$,meaning they are already efficient at low $CO_2$ concentrations. Therefore,the current atmospheric level of $CO_2$ is limiting for $C_3$ plants.

The level of $CO_2$ available in the atmosphere is limiting for $........$ plants.

Similar Questions

Assertion $:$ Except for plants in shade or in dense forests,light is rarely a limiting factor in nature.
Reason $: C_4$ plants respond to high light intensities.

Beyond the saturation point,the rate of photosynthesis begins to decline because of:
$I$. Photo-inhibition
$II$. Photo-oxidation
$III$. Photo-reduction
Select the correct option:

Which abiotic factor is not essential for the early growth of a plant,but growth is sustained only in its presence?

Identify the graph that shows the effect of light intensity on the rate of photosynthesis from the four given graphs.

If the carbon dioxide content of the atmosphere is as high as $300 \, ppm$,what will be the effect on plants?

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