Botany - Plant Growth and Development Question with Solution | TestHub
There were four dormant seeds with their own reasons of dormancy. Help them grow by breaking their dormancy.
| Cause of dormancy | Way to overcome |
| Impermeable seed coat | i. Changing the environment. |
| Double dormancy | ii. Scarification |
| Dry seed | iii. Cold, moist storage for 4-12 weeks |
| Immature Embryo | iv. Abrasion of seed coat and stratification |
Options:
Answer:
Solution:
Scarification is the process of weakening, opening or altering the coat of seed to encourage germination, therefore the impermeable seed coat is overcome by scarification.
Double dormancy involves two reasons of dormancy which has to be overcome. They are usually : hard seed coat and immature embryo which can be overcome by abrasion of the seed coat and stratification.
Dry seed can be overcome by growing it in a moist environment.
Embryo rest means when the embryo is immature to grow and that can be overcome by stratification which means storing it in moist cold storage for few weeks.
