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Why have plants evolved with seed dormancy mechanisms?
Dormancy mechanisms increase seedling survival by allowing germination when conditions are favorable
endosperm
stratification
gibberellin
60 to 80 degrees Fahrenheit
to increase the length of the growing season
Those seeds require darkness in order to germinate.
scarification
What is the best explanation as to why seeds of many plants have to be sowed below the soil surface in order to germinate?
Dormancy mechanisms increase seedling survival by allowing germination when conditions are favorable
endosperm
stratification
gibberellin
60 to 80 degrees Fahrenheit
to increase the length of the growing season
Those seeds require darkness in order to germinate.
scarification
Why would a horticulturist apply the technique known as indirect seeding?
Dormancy mechanisms increase seedling survival by allowing germination when conditions are favorable
endosperm
stratification
gibberellin
60 to 80 degrees Fahrenheit
to increase the length of the growing season
Those seeds require darkness in order to germinate.
scarification
Which is the optimal temperature range for the germination of most seeds?
Dormancy mechanisms increase seedling survival by allowing germination when conditions are favorable
endosperm
stratification
gibberellin
60 to 80 degrees Fahrenheit
to increase the length of the growing season
Those seeds require darkness in order to germinate.
scarification
Which plant hormone plays the largest role in activating seed germination?
Dormancy mechanisms increase seedling survival by allowing germination when conditions are favorable
endosperm
stratification
gibberellin
60 to 80 degrees Fahrenheit
to increase the length of the growing season
Those seeds require darkness in order to germinate.
scarification
What is a seed dormancy mechanism that prevents the seed of certain plant species from germinating in late fall or early winter?
Dormancy mechanisms increase seedling survival by allowing germination when conditions are favorable
endosperm
stratification
gibberellin
60 to 80 degrees Fahrenheit
to increase the length of the growing season
Those seeds require darkness in order to germinate.
scarification
A plant propagator might treat certain seeds with an acid bath before sowing. To which process is this most closely related?
Dormancy mechanisms increase seedling survival by allowing germination when conditions are favorable
endosperm
stratification
gibberellin
60 to 80 degrees Fahrenheit
to increase the length of the growing season
Those seeds require darkness in order to germinate.
scarification
What is the primarily source of food for the developing embryo in the seeds of grass plants?
Dormancy mechanisms increase seedling survival by allowing germination when conditions are favorable
endosperm
stratification
gibberellin
60 to 80 degrees Fahrenheit
to increase the length of the growing season
Those seeds require darkness in order to germinate.
scarification
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