Question

Name a hormone that promotes the growth of tendrils and explain how they help a pea plant to climb up other plants.

Answer 1

Auxin is a hormone that promotes the growth of plant tendrils. Tendrils are slender structures that help climbing plants like peas connect to and climb other surfaces. Here's how auxin and tendrils work together:

1. Auxin Production: The developing tip of the tendril creates auxin, which is carried downward.
2. Unequal Growth: Auxin promotes cell elongation, with more elongation on the side opposing the support than the side touching it.
3. Curling Response: Unequal growth causes the tendril to curl around the support.
4. Attachment: Curled tendrils wrap around the support to anchor and support the climbing plant's growth.