Botany - Photosynthesis in Higher Plants Question with Solution | TestHub

The fact that C₃plants respond to higher CO₂concentration by showing increased rates of photosynthesis leading to higher productivity has been used for some greenhouse crops such as tomatoes and bell pepper. They are allowed to grow in a carbon dioxide enriched atmosphere that leads to higher yields.
The current availability of CO₂levels is limiting to C₃plants.
C₄plants show saturation at about 360 µlL^-1while C₃responds to increased CO₂concentration and saturation is seen only beyond 450 µlL^-1.
Increase in concentration up to 0.05 per cent can cause an increase in CO₂fixation rates.