Question

Which one regulates plant growth?

• A. Commensalism
• B. Climate
• C. Hormones
• D. Both B and C

Answer 1

The correct option is D Both B and C

There are various plant hormones which regulate plant growth. Hormones like auxin, gibberellin, cytokinin promotes growth whereas hormones like ethylene and abscisic acid inhibits growth. Plant growth is also regulated by the climate or atmosphere. Various climatic factors like rainfall, light, temperature, humidity, etc regulates plant growth and development.

Thus, the correct answer is option D.