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Choose the correct answer from the alternatives given.
The phenomenon of photoperiodism was discovered by:
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In 1920, W. W. Garner and H. A. Allard published their discoveries on photoperiodism and felt it was the length of daylight that was critical, but it was later discovered that the length of the night was the controlling factor.
So, the correct answer is 'Garner and Allard'.
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| Question Text | Choose the correct answer from the alternatives given. The phenomenon of photoperiodism was discovered by: |
| Answer Type | Text solution:1 |
| Upvotes | 150 |
