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Lynna [10]
3 years ago
10

Commercial plant growers artificially control the lengths of days and nights. This produces a response called

Biology
2 answers:
Olenka [21]3 years ago
6 0

the answer is A. Photoperiodism

Hope this helps!

leonid [27]3 years ago
5 0
The answer is A. photoperiodism.

Photoperiodism is an organism reaction to the lengths of days and nights. Some plants require longer days, and some require shorter days. By changing the lengths of days and nights, commercial plant growers are able to increase plants productivity.

Tropism is plant growth in a response to a stimulus.
As it name suggests, <em>photo</em>tropism is plant growth in a response to light. 
<em>Gravi</em>tropism is plant growth in a response to gravity.
Thigmotropism is plant growth in a response to contact
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