Which statement describes a plant tropism?
A. The plant died for lack of nutrients in the soil.
B. Chlorophyll is contained in the leaves.
C. The plant's roots grew in the direction of water.
D. The plant could reproduce itself by either seeds or runners.
E. The plant dropped its leaves in the fall.
C. The plant's roots grew in the direction of water.
C. The plant's roots grew in the direction of water.
The statement that describes a plant tropism is C. The plant's roots grew in the direction of water.
To understand why this is the correct answer, you need to know what a tropism is. Tropism refers to the growth or movement of an organism in response to a stimulus. In the case of plants, tropisms are typically observed in response to light, gravity, or water.
In this case, the plant's roots growing in the direction of water is an example of a positive tropism called hydrotropism. Hydrotropism is when plant roots grow towards water sources. This is an important adaptive response for plants as it allows them to locate and absorb water needed for survival and growth.
To answer this question, you can eliminate options A, B, D, and E because they do not describe a plant tropism. Option A describes the plant dying due to lack of nutrients, which is not a type of growth or movement in response to a stimulus. Option B mentions chlorophyll in leaves, which is true, but it does not describe a tropism. Option D describes plant reproduction methods, which is unrelated to tropism. Option E describes leaf dropping in the fall, which is a seasonal response called abscission, not a tropism.
Therefore, the correct answer is C. The plant's roots grew in the direction of water.