Read following statements and answer in suitable term given in option:-

a. The promotion of flowering by a period of low temperature

b. Hormonal substance migrates from leaves to shoot for inducing flowering 

c. The general metabolic activity of the embryo slow down or in inactive state 

d. Formation of separation layer between tissue

1. Photoperiodism, vernalisation, abscission layer, dormancy

2. Vernalisation, photoperiodism, dormancy, abscission layer

3. Dormancy, photoperiodism, vernalisation, abscission layer

4. Abscission layer, vernalisation, dormancy, photoperiodism 

How many of the following can help in breaking seed dormancy?
1. Changing the environmental condition like light & temperature.
2. Application of GA₃ or nitrates.
3. Chilling condition.
4. All the above

Which of the following is not an inhibitory substance governing seed dormancy?

1. Abscisic acid

2. Phenolic acid

3. Para-ascorbic acid

4. Gibberellic acid

Which of the following is not a natural mean to remove seed coat?

Plant growth promoters are not involved in

Inhibitory substances in dormant seeds cannot be removed by subjecting seeds to:
1. Gibberellic acid
2. Nitrate
3. Ascorbic acid
4. Chilling conditions