Exams › NEET › Biology

Phosphoenol Pyruvate (PEP) is the primary CO₂ acceptor in:

1. C₄ plants
2. C₂ plants
3. C₃ and C₄ plants
4. C₃ plants

Correct answer: C₄ plants

Solution

In C₄ plants, the initial CO₂ fixation occurs in mesophyll cells where PEP carboxylase adds CO₂ to phosphoenol pyruvate (PEP), forming a 4-carbon compound. C₃ plants use RuBP as the primary CO₂ acceptor, not PEP.

Related NEET Biology questions

• One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of:
• Stroma in the chloroplasts of higher plant contains:
• In plant cells, peroxisomes are associated with
• Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options.
• Which one of the following is essential for photolysis of water?
• Oxygen is not produced during photosynthesis by

⚔️ Practice NEET Biology free + battle 1v1 →