What is phototropism?

The growth of a plant toward a light source.

An organism that responds to environmental factors.

What did Carles and Francis Darwin conclude?

That the tip of the seedling in a plant somehow detects light.

What did Boysen-Jensen put in the stem of two plants and how did they react?

Gelatin and Mica. Gelatin grew normally, facing the sun, and the mica grew straight up.

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Stack #107285

the quiz	da bomb
What is phototropism?	The growth of a plant toward a light source.
What is stimuli?	An organism that responds to environmental factors.
What did Carles and Francis Darwin conclude?	That the tip of the seedling in a plant somehow detects light.
Who lived from 1883 - 1959?	Peter Boysen-Jensen.
What did Boysen-Jensen put in the stem of two plants and how did they react?	Gelatin and Mica. Gelatin grew normally, facing the sun, and the mica grew straight up.
In what year did Frits Went confirm the hypothesis that a growth chemical is produced in plants?	1926.