Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
During the dark reaction, 3-PGA is derived from 
BiologyPhotosynthesis in Higher PlantsNEET
Options:
  • A RuBP only
  • B CO2 only 
  • C RuBP + CO2
  • D RuBP + CO2 + PEP
Solution:
2009 Upvotes Verified Answer
The correct answer is: RuBP + CO2
For fixation of carbon, 3-phosphoglyceric acid is formed from CO2 and RuBP. CO2 first combines with RuBP to form unstable 6 carbon compound which immediately breaks into two molecules of 3 C - PGA. 

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.