Multiple choice

The fact that there is at least one dark reaction in photosynthesis was discovered by:

  1. M. Calvin

  2. Blackman

  3. Arnon

  4. Emerson
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blackman (1905) discovered that photosynthesis consists of two distinct phases: the light reactions and the dark reactions. The dark reactions (light-independent reactions) don't directly require light but use the products of light reactions. Calvin later elucidated the specific pathway (Calvin cycle) of the dark reaction.

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