Answer :
Answer:
The correct answer will be- decides the correct orientation of the plant in response to environmental stimulus.
Explanation:
Tropism refers to the movement of plants in response to environmental stimulus. The movement of tropism in response to light is known as phototropism and the gravity is known as geotropism.
The phototropism helps the plant to respond in the light as the cells which are far from the sunlight in order to get sunlight expands its cell under the control of the auxin. This causes bending of the plant.
The geotropism helps determine the direction of growth as the roots which grow in response to gravity results in the inhibition of the lower side of the root and formation of curvature towards gravity.
Thus, decides the correct orientation of the plant in response to an environmental stimulus is the correct answer.