Auxin and Cytokinin Concentrations

Q.

A hormone delaying senescence is

1. Gibberellin

2. Cytokinin

3. Auxin

4. Ethylene

Q. Hormone pair required for a callus to differentiate is

1. Auxin and Cytokinin
2. Cytokinin and Ethylene
3. Auxin and ABA
4. Cytokinin and Gibberellin

Q.

difference between phototropism and vernalisation?

Q. Callus can form shoot or root by changing ratio of

1. auxin to gibberellin
2. auxin to cytokinin
3. cytokinin to ethylene
   
4. gibberellin to cytokinin

Q.

For producing a callus from plant cells, which of the following are required?

1. auxin to gibberellin
2. auxin to cytokinin
3. cytokinin to ethylene
4. gibberellin to cytokinin