Plant Responses to the Environment: Tropisms and Defenses

The video explores plant tropisms, which are movements or growths in response to stimuli like light, gravity, and water. It explains how auxin influences these tropisms, such as phototropism and gravitropism. The video also covers plant circadian rhythms and phenology, detailing how plants respond to day/night cycles and seasonal changes. Additionally, it discusses plant defenses against herbivory, including physical and chemical strategies to deter herbivores.

What is auxin and what role does it play in plant growth?

Explain the difference between positive and negative tropism.

What is phototropism and why is it important for plants?

Describe the concept of gravitropism and its significance for plant roots.

What is the role of circadian rhythms in plant behavior?

What are the two main types of plant defenses against herbivory?

How do chemical defenses in plants work to deter herbivores?