NEET Solved Paper 2017 Question 25
Question: With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?
Options:
A) Tomato is a greenhouse crop which can be grown in $ CO _2- $ enriched atmosphere for higher yield
B) Light saturation for $ CO _2 $ fixation occurs at 10% of full sunlight
C) Increasing atmospheric $ CO _2 $ concentration upto 0.05% can enhance $ CO _2 $ fixation rate
D) $ C _3 $ plants responds to higher temperatures with enhanced photosynthesis while $ C _4 $ plants have much lower temperature optimum
Show Answer
Answer:
Correct Answer: D
Solution:
- In $ C _3 $ plants photosynthesis is decreased at higher temperature due to increased photorespiration. $ C _4 $ plants have higher temperature optimum because of the presence of pyruvate phosphate dikinase enzyme, which is sensitive to low temperature.
