Tropisms and Hormones

Plants can respond quickly to stimuli, but most responses are slow and growth-based, known as tropisms. Key tropisms include phototropism, geotropism, and hydrotropism, which direct growth towards light, gravity, and water, respectively. Auxin, a plant hormone, plays a crucial role in these growth responses by accumulating on the shaded side of a plant, causing it to bend towards light. Understanding auxin's effects allows us to use it in rooting powders and to increase fruit yields, highlighting the importance of tropisms in plant survival.

What are the main types of tropisms that plants exhibit?

Explain the difference between positive and negative growth responses in plants.

What role do plant hormones play in growth responses?

How does auxin affect plant growth in response to light?

Describe how tropisms help plants survive in their environment.