Question

Give reason for why dry seed do not germinate

Answer 1

because they need water for germination and if they are dehydrate they cant respire hence they are not germinated

Answer 2

Other conditions such as improper soil temperature and moisture, or a combination of the two, are the majority of the reasons that seeds don't germinate in a timely manner. Planting too early, too deep, watering too much or too little are common mistakes made.