It takes a very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

1. Cytokinin and Abscisic acid

2. Auxin and Ethylene

3. Gibberellin and Cytokinin

4. Gibberellin and Abscisic acid

What is the site of perception of photoperiod necessary for induction of flowering in plants?

1. Leaves

2. Lateral buds

3. Pulvinus

4. Shoot apex

Which one of the following pairs is not correctly matched?

"Foolish seedling" disease of rice led to the discovery of:

1. GA

2. ABA

3. 2, 4-D

4. IAA

Which one of the following acids is a derivative of carotenoids?

1. Indole-butyric acid

2. Indole-3-acetic acid

3. Gibberellic acid

4. Abscisic acid

One of the synthetic auxin is:

1. NAA

2. IAA

3. GA

4. IBA

Which one of the following growth regulators is known as the stress hormone?

The typical growth curve in plants is:

You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?

1. IAA and gibberellin

2. Auxin and cytokinin

3. Auxin and abscisic acid

4. Gibberellin & abscisic acid