Question

Which one of the plant growth regulators would you use if you are asked to: 

1. Induce rooting in a twig 

2. Quickly ripen a fruit 

3. Delay leaf senescence 

4. ‘bolt’ a rosette plant 

5. Induce immediate stomatal closure in leaves.

Answer 1

1. auxin 

2. ethylene 

3. cytokinin 

4. gibberellins 

5. ABA