Give an example of a plant hormone that promotes growth
Answer
Auxin is a plant hormone that promotes growth .
Let us consider the example of a sunflower growing towards the sunlight.
- Once the plant detects sunlight , the hormone auxin is secreted at the shoot tips .
- The secreted auxins diffuse towards the shady side of the plant
- This makes the cells on the shady side grow longer
- Thus, the plant appears to bend towards light .