Collectively, What Did the Work of Charles Darwin, Francis Darwin

question 178

Multiple Choice

Collectively, what did the work of Charles Darwin, Francis Darwin, and Frits Went demonstrate about phototropism in plants?

• A)A chemical signal is produced in shoot tips in response to light.
• B)A chemical signal is produced in shoot stems in response to light.
• C)Cells exposed to a chemical signal produced by light will grow toward the light.
• D)Cells exposed to a chemical signal produced by light will not grow toward the light.

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