. . . . . . is a period when growth and development is temporarily stopped.

Which of the following factors are responsible for seed dormancy?
$I -$ Hard and tough seed coat
$II -$ Presence of Abscisic Acid $(ABA)$
$III -$ Chemicals like Gibberellic Acid and Nitrates
$IV -$ Phenolic acids and Para-ascorbic acid
$V -$ Immature embryo

Treatment of seed at low temperature under moist conditions to break its dormancy is called

Why does seed dormancy take place?

The viability of a seed is determined with the help of.......

Seeds of some plants germinate immediately after shedding from the plants,while in other plants,they require a period of rest before germination. The latter phenomenon is called dormancy. Give the reasons for seed dormancy and some methods to break it.