Plant Growth, Development, and Response: Plant Responses

The video explains how plants and humans respond to environmental stimuli. It introduces the concept of stimuli and describes various types of tropisms, such as phototropism, gravitropism, and thigmotropism. The video also covers nastic movements, which are non-directional responses to stimuli, and the role of auxins, a plant hormone, in growth responses. Finally, it discusses photoperiodism, the response of plants to the length of darkness, which affects flowering.

What is the effect of gravity on plant roots and stems?

Describe photoperiodism and its significance in plant behavior.