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Agronomy QUESTION #2081
Question 1
Seed dormancy is agronomically defined as a condition in which:
  • Seeds have lost viability due to improper storage conditions
  • A viable seed fails to germinate under apparently favorable environmental conditions (adequate moisture, oxygen, and temperature) due to internal physiological, morphological, or physical constraints — a survival mechanism preventing germination during unfavorable seasons✔️
  • Seeds germinate prematurely while still attached to the mother plant (vivipary)
  • Seeds require chemical treatment to break the seed coat before germination
Correct Answer Explanation
Dormancy is an adaptive mechanism preventing all seeds of a population from germinating simultaneously, spreading germination risk across time and conditions. Types include: physical dormancy (hard seed coat — Fabaceae), physiological dormancy (hormone-mediated — ABA dominance), morphological (immature embryo), and combinational. Breaking dormancy appropriately is critical for uniform crop establishment.