Biology NEET Full Syllabus Mock Test 180 Questions New Syllabus Mock Test - 14 PCB Single Correct MCQ
Published on: August 13, 2026

What will happen if tomato or bell pepper plants in a greenhouse are kept under elevated conditions?

A
There will be an increase in productivity if concentration increases beyond .
B
There will be a higher rate of photosynthesis up to , beyond which there will not be any further increase.
C
Accumulation of results in an increase in photosynthesis, thus increasing productivity up to a concentration of .
D
There will be a constant increase in productivity with respect to increasing concentration, without saturation.

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The correct answer is:
C

The plants show saturation at about while responds to increased concentration and saturation is seen only beyond 450 plants respond to higher concentration 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 carbon dioxide enriched atmosphere that leads to higher yields.

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