Select the correct sequence of experiments that led to a gradual understanding of photosynthesis in green plants.
- A.Absorption spectra of chlorophyll a and b → production of glucose → release of oxygen → role of air
- B.Role of air → release of oxygen → production of glucose → absorption spectra of chlorophyll a and b✓
- C.Release of oxygen → production of glucose → absorption spectra → role of air
- D.Production of glucose → role of air → release of oxygen → absorption spectra
Correct Answer
(B) Role of air → release of oxygen → production of glucose → absorption spectra of chlorophyll a and b
Solution & Explanation
Chronology of the classic experiments: Joseph Priestley (1770) — role of air; Jan Ingenhousz — release of oxygen by green parts in light; Julius von Sachs (1854) — glucose (starch) production; T.W. Engelmann — action/absorption spectrum of chlorophyll. So: role of air → release of oxygen → glucose → absorption spectra.
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