Plant Growth: Auxins and Gibberellins

The video explores how plants grow and respond to light and gravity through hormones like auxins, cytokinins, and gibberellins. Auxins influence plant bending by affecting cell growth differently in stems and roots. Phototropism and geotropism are explained, showing how plants grow towards light and respond to gravity. Cytokinins and gibberellins also play roles in plant growth, with gibberellins aiding in seed germination and flowering.

What is phototropism and how does it affect plant growth?

Explain the role of auxin in the growth of stems and roots.

What happens to a plant's growth if the tips of its shoots are cut off?

Describe the difference in response to auxins between stems and roots.

How do gibberellins contribute to the germination of seeds?