The period of suspended growth due to exogenous conditions is termed as

The seed treatment given at low temperatures and moist conditions to break seed dormancy is called ......

Explain the methods to overcome seed dormancy.

Which of the following is not a man-made method to overcome seed dormancy?
$(I)$ Seed coat broken by using knives,sandpapers,etc.
$(II)$ Passage of seed through the digestive tract of animals.
$(III)$ Effect of inhibitory substances can be removed by subjecting the seeds to chilling conditions.
$(IV)$ By application of certain chemicals like gibberellic acid and nitrates.

What are the causes of seed dormancy and how can it be removed?

Seed dormancy is due to the