Q10.ย Describe the conditions for seed germination.
Answer:
External conditions
The most important external conditions include water, oxygen and favourable temperature.
Water (moisture)
Seeds of most plants have low water content, and germination cannot occur until seed coat or other tissues have imbibed water. The absorbed water is used in the digestion of stored food and helps in elongation of hypocotyl and epicotyl.
Oxygen
Oxygen is essential for the respiration in the cells of embryo.
Temperature
Seeds differ greatly in their temperature, required for germination. The optimum temperature for the germination of the seeds of most plants ranges from 25-30ยฐC.
Internal Conditions
The internal conditions include a live embryo and sufficient food storage.
