Q21 / 180 · NEET 2026 (Re-NEET) · Botany
Select the correct sequence of experiments that led to a gradual understanding of photosynthesis in green plants.
- AProduction of glucose $\rightarrow$ role of air $\rightarrow$ release of oxygen $\rightarrow$ absorption spectra of chlorophyll a and b
- BAbsorption spectra of chlorophyll a and b $\rightarrow$ production of glucose $\rightarrow$ release of oxygen $\rightarrow$ role of air
- Correct answerCRole of air $\rightarrow$ release of oxygen $\rightarrow$ production of glucose $\rightarrow$ absorption spectra of chlorophyll a and b
- DRelease of oxygen $\rightarrow$ production of glucose $\rightarrow$ absorption spectra of chlorophyll a and b $\rightarrow$ role of air
Solution
Joseph Priestley (1770) performed experiments that revealed the essential role of air in the growth of green plants.
Jan Ingenhousz (1779) showed that sunlight is essential to the plant process and that only the green parts of the plants release oxygen.
Julius von Sachs (1854) provided evidence for the production of glucose when plants grow.
T.W. Engelmann (1843-1909) described the first action spectrum of photosynthesis, which roughly resembles the absorption spectra of chlorophyll a and b.
The correct chronological sequence is role of air $\rightarrow$ release of oxygen $\rightarrow$ production of glucose $\rightarrow$ absorption spectra of chlorophyll a and b.
Jan Ingenhousz (1779) showed that sunlight is essential to the plant process and that only the green parts of the plants release oxygen.
Julius von Sachs (1854) provided evidence for the production of glucose when plants grow.
T.W. Engelmann (1843-1909) described the first action spectrum of photosynthesis, which roughly resembles the absorption spectra of chlorophyll a and b.
The correct chronological sequence is role of air $\rightarrow$ release of oxygen $\rightarrow$ production of glucose $\rightarrow$ absorption spectra of chlorophyll a and b.
Hence, the correct answer is option: 'C'.