Question

which situation is a result of geotropism?
a stem turns to grow upward against gravity.
gravity pulls down on all parts of a plant.
leaves are supported on strong stems.
a plant falls down when it wilts.

Explanation:

Geotropism is the growth of plant parts in response to gravity. A stem growing upward against gravity (negative geotropism) is a classic example. The other options do not relate to geotropism. Option A (plant falling when it wilts) is due to lack of turgor pressure. Option B (leaves supported on stems) is structural support. Option C (gravity pulling on all plant parts) is a general statement, not a specific response (geotropism is a directional growth response).

Answer:

A stem turns to grow upward against gravity.