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The loss of water in C₄ plants compared to C₃ plants for the same amount of CO₂ fixed is
Options
(a) Half
(b) one-third
(c) one-fourth
(d) double
Correct Answer:
one-third
Explanation:
The loss of water in C₄ plants compared to C₃ plants for the same amount of CO₂ fixed is one-third. C₄ plants have a competitive advantage over plants possessing the more common C₃ carbon fixation pathway under conditions of drought, high temperatures and nitrogen or CO₂ limitation. When grown in the same, environment, at 30°C, C₃ grasses lose approximately 833 molecules of water per CO₂ molecules that is fixed, whereas C₄ grasses lose only 277 water molecules per CO₂ moleculr fixed. This shows that the
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Topics: Photosynthesis in Higher Plants
(153)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following diseases is caused by a protozoan ?
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- As temperature changes from 3°C to 45°C, the rate of enzyme activity will
- Longest phase in Mphase of cell cycle is
- The Leydig cells found in the human body are the secretory source of
Topics: Photosynthesis in Higher Plants (153)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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