Give an example of a plant hormone that promotes growth and a plant hormone that inhibits growth.

Auxin is a plant hormone that promotes growth. It plays a central role in the growth of roots, stems, and branches, as well as in the development of fruits. Auxins are also involved in phototropism (growth of plants towards light) and gravitropism (growth of plant roots towards gravity).

Abscisic acid is a plant hormone that inhibits growth. It plays a role in seed dormancy, ensuring that seeds only germinate under optimal conditions. It’s also involved in closing the stomata during times of water stress to reduce water loss by transpiration.

Both of these hormones, along with others like cytokinins, gibberellins, ethylene, etc., play a complex role in the growth and development of plants, often with their effects being context-dependent.

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