QUESTIONS
1. What are plant hormones?
2. How is the movement of leaves of the sensitive plant different from the
movement of a shoot towards light?
3. Give an example of a plant hormone that promotes growth.
4.How do auxins promote the growth of a tendril around a support?
Answers
Explanation:
Plant hormones are signal molecules, produced within plants, that occur in extremely low concentrations. Plant hormones control all aspects of plant growth and development, from embryogenesis, the regulation of organ size, pathogen defense, stress tolerance and through to reproductive development.
The movements of the leaves of the sensitive plant are touch sensitive and independent of growth. While the movement of the shoot towards light is growth related and known as phototropism.
Auxin is an example of plant hormone which promotes the growth of the plant.
Auxin is plant hormone which is synthesized at the tip of the shoot. It helps the cell grow longer. When a tendril comes in contact with a support, auxin stimulates faster growth of the cells on the opposite side that's why the tendril forms a coil around the support.
Answer:
Q.1 What are plant hormones?
Ans. Plant hormones, also known as phytohormones, are chemicals that regulate plant growth. Plant hormones are signaling molecules and are produced in plants in very small quantities.
Q.2 How is the movement of leaves of the sensitive plant different from themovement of a shoot towards light?
Ans. The movements of the leaves of the sensitive plant are touch sensitive and independent of growth. While the movement of the shoot towards light is growth related and known as phototropism.
Q.3 Give an example of a plant hormone that promotes growth.
Ans. Auxin is an example of plant hormone which promotes the growth of the plant.
Q.4 How do auxins promote the growth of a tendril around a support?
Ans. Auxin is plant hormone which is synthesized at the tip of the shoot. It helps the cell grow longer. When a tendril comes in contact with a support, auxin stimulates faster growth of the cells on the opposite side that's why the tendril forms a coil around the support
Answer by @Nawab & itzpapakahelicopter