Question

Roots grow downwards, plants respond positively for gravitational force. What is this called?

• A. Phototropism
• B. Geotropism
• C. Hydrotropism
• D. Thigmotropism
  %Correct answer

Hint:

Remember, phototropism is the response to light, geotropism is the response to gravity, hydrotropism is the response to water, and thigmotropism is the response to touch.

Answer 1

The Correct Option is B

Geotropism is the growth response of plants to gravity. Roots grow downwards in response to the gravitational force, which is also called geotropism.