A researcher observes that a batch of dormant seeds fails to germinate even after scarification and exposure to favorable conditions. Suspecting the presence of a volatile inhibitor, which experimental setup is MOST appropriate to confirm this hypothesis?
Grind the dormant seeds and apply the extract to non-dormant seeds.
Place the dormant seeds in a closed container with non-dormant seeds of a different species and observe germination rates.
Expose the dormant seeds to high concentrations of ethylene gas.
Soak the dormant seeds in a solution of gibberellic acid.
Related Questions
Which of the following is NOT a method used by plants to overcome seed dormancy?
Scarification of the seed coat
Stratification or exposure to low temperatures
Exposure to high concentrations of abscisic acid
Leaching of inhibitory substances
Which of the following is not an inhibitory substance governing seed dormancy ?
Gibberellic acid
Abscisic acid
Phenolic acid
Para-ascorbic acid
The hard seed coat in some seeds induces dormancy by:
Producing growth inhibitors
Preventing water and oxygen uptake
Lowering the temperature inside the seed
Increasing the light requirement for germination
Treatment of seed at low temperature under moist conditions to break its dormancy, is called
Scarification
Vernalization
Chelation
Stratification
Which of the following is NOT a method used by seeds to overcome dormancy?
Scarification of the seed coat
Stratification (exposure to cold)
Exposure to ethylene
Exposure to appropriate light conditions
A scientist is studying seed dormancy. Which of the following compounds would they least likely find contributing to this state in a dormant seed?
Abscisic acid
Phenolic acids
Short-chain fatty acids
Gibberellins
In some plant species, seed dormancy is broken by the action of microorganisms in the soil. Which mechanism is MOST LIKELY involved in this process?
Microbial production of gibberellins that stimulate germination.
Microbial degradation of germination inhibitors in the seed coat.
Microbial enhancement of oxygen availability to the embryo.
Microbial scarification of the seed coat, allowing water imbibition.
The hard seed coat of some seeds acts as a barrier to:
Water uptake only
Oxygen uptake only
Both water and oxygen uptake
Light penetration
Immature embryos can cause a type of dormancy known as:
Physical dormancy
Morphological dormancy
Physiological dormancy
Chemical dormancy
A seed that requires a period of cold treatment before it can germinate exhibits:
Physical dormancy
Morphological dormancy
Physiological dormancy
Chemical dormancy
