Emersons enhancement effect and Red drop have been instrumental in the discovery

Emersons Enhancement Effect And Red Drop Have Been Instrumental In Biology Question

Emerson’s enhancement effect and Red drop have been instrumental in the discovery of

Options

(a) Photophosphorylation and non-cyclic electron transport
(b) Two photosystems operating simultaneously
(c) Photophosphorylation and cyclic electron transport
(d) Oxidative Phosphorylation

Correct Answer:

Two photosystems operating simultaneously

Explanation:

The Emerson effect is the increase in the rate of photosynthesis after chloroplasts are exposed to the light of wavelength 670 nm (red light) and 700 nm (far-red light). When simultaneously exposed to the light of both wavelengths, the rate of photosynthesis is far higher than the sum of the red light and far-red light photosynthesis rates ( known as enhancement effect ). This experiment led to the discovery of two photosystems. – PS II and PS I.

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Topics: Photosynthesis in Higher Plants (153)
Subject: Biology (4253)

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