Question
Mon March 21, 2011 By:

1.what is meant by seed dormancy? 2.Is shoot of a plant positively hydrotropic or negatively hydrotropic? Please explain.

Expert Reply
Mon March 21, 2011
 

Dear Student,

Seed dormancy is a condition of plant seeds that prevents germinating under optimal environmental conditions. Living, non dormant seeds germinate when soil temperatures and moisture conditions are suited for cellular processes and division; dormant seeds do not.

Seed dormancy is defined as a state in which seeds are prevented from germinating even under environmental conditions normally favorable for germination.  These conditions are a complex combination of water, light, temperature, gasses, mechanical restrictions, seed coats, and hormone structures.

We hope that clarifies your query.
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