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A dormant seed is one that is unable to germinate in a specified period of time under a combination of environmental factors. Consider the following statements with regard to this.
1.Physical dormancy is the result of impermeable layers that develops during maturation and drying of the seed or fruit.
2.Physical dormancy has not been recorded in any angiosperms.
Select the correct answer using the codes below.
1 only
2 only
Both 1 and 2
None
Dormancy that is caused by an impermeable seed coat is known as physical dormancy. Physical dormancy is the result of impermeable layer(s) that develops during maturation and drying of the seed or fruit. This impermeable layer prevents the seed from taking up water or gases. As a result, the seed is prevented from germinating until dormancy is broken. In natural systems, physical dormancy is broken by several factors including high temperatures, fluctuating temperatures, fire, freezing/thawing, drying or passage through the digestive tracts of animals. Physical dormancy has been identified in the seeds of plants across 15 angiosperm families. However it has not been recorded in any gymnosperms
By: kamaljeet kaur ProfileResourcesReport error
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