Plants respond to their environment in various ways to survive and thrive. These responses can be triggered by factors such as light, gravity, water, and touch. For example, phototropism is the growth of a plant toward light, while gravitropism is how roots grow downward in response to gravity. Additionally, plants can react to stressors like drought or pests. They may close their stomata to conserve water or produce chemicals to deter herbivores. These adaptive responses help plants maintain homeostasis and ensure their growth and reproduction in changing conditions.