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:

  • This statement is incorrect because $ C _4 $ plants typically have a higher temperature optimum for photosynthesis compared to $ C _3 $ plants. $ C _4 $ plants are more efficient at photosynthesis in high-temperature environments, whereas $ C _3 $ plants generally perform better in cooler conditions.