Q. PGA as the first CO₂ fixation product was discovered in photosynthesis of
A) Alga
B) Bryophyte
C) Gymnosperm
D) Angiosperm
Explanation
[Solution from source] Melvin Calvin traced radioactive ¹⁴C in the green alga Chlorella and found that 3-phosphoglyceric acid (PGA) was the first stable product of CO₂ fixation. The C₄ pathway (OAA first) was found later in angiosperms such as sugarcane and maize. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.