STANDARDBotany-Photosynthesis

STANDARD Botany Calvin Cycle MCQ Question

Type: MCQ-conceptual-Medium

PGA as the first CO₂ fixation product was discovered in photosynthesis of

A

Algae

B

Bryophyte

C

Gymnosperm

D

Angiosperm

Correct Answer

Option A

Detailed Explanation

The use of radioactive ¹⁴C by Melvin Calvin in algal (chlorella) photosynthesis studies led to the discovery that the first CO₂ fixation product was a 3-carbon organic acid. The first product identified was 3-phosphoglyceric acid.

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