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The first action spectrum of photosynthesis which was described by Engelmann

The first action spectrum of photosynthesis which was described by Engelmann was related

Options

(a) Algae
(b) Mint plant
(c) Bacteria
(d) Bryophytes

Correct Answer:

Algae

Explanation:

Algae (Cladophora). TW Engelmann (1843-1909) did an interesting experiment using a prism. He split light into its spectral components and then illuminated a green alga, Cladophora, planced in a suspension of aerobic bacteria. The bacteria were used to find the sites of O₂ evolution. He noticed that the bacteria accumulated mainly in the region of blue and red light of the split spectrum. A first action spectrum of photosynthesis was thus described.

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