Multiple Choice 1 point Which of the following is an example of thigmotropism A sunflower turning toward I the sun A vine wrapping around a fence Roots growing toward water A seed sprouting in the soil

## Step 1<br />Thigmotropism is a type of plant growth that occurs in response to touch or physical contact with a solid object. This is a common characteristic of climbing plants, which use thigmotropism to help them grow and climb.<br /><br />## Step 2<br />Looking at the options provided, we need to identify which one best represents thigmotropism. <br /><br />## Step 3<br />Option A, a sunflower turning toward the sun, is an example of phototropism, not thigmotropism. Phototropism is a plant's response to light, where the plant grows towards the light source.<br /><br />## Step 4<br />Option B, a vine wrapping around a fence, is an example of thigmotropism. The vine is responding to the physical contact with the fence by wrapping around it.<br /><br />## Step 5<br />Option C, roots growing toward water, is an example of hydrotropism, not thigmotropism. Hydrotropism is a plant's response to water, where the plant grows towards the water source.<br /><br />## Step 6<br />Option D, a seed sprouting in the soil, is a general process of plant growth and does not specifically represent thigmotropism.