Van Niel's Photosynthesis Model — NEET Biology
📚 Practice Concept📖 NCERT Source
A milestone contribution to the understanding of photosynthesis was that made by a microbiologist, Cornelius van Niel (1897-1985), who, based on his studies of purple and green bacteria, demonstrated that photosynthesis is essentially a light-dependent reaction in which hydrogen from a suitable oxidisable compound reduces carbon dioxide to carbohydrates. This can be expressed by:
🖼️Related NCERT figure: Chemical equation showing 2H₂A + CO₂ with Light arrow leading to 2A + CH₂O + H₂O
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QuestionPractice Question
Which scientist first proposed that O₂ comes from H₂O, not CO₂?
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Related Concepts from Photosynthesis in Higher Plants