When Darwin Covered the Tip of a Grass Seedling with Metal

question 9

Multiple Choice

When Darwin covered the tip of a grass seedling with metal foil and then illuminated it from one side, what happened to the seedling?

• A)It bent away from the directional light.
• B)It did not respond to the directional light.
• C)It grew toward the light, as expected.
• D)It waved back and forth.

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