Answer:
1) The embryo germinates
2) Water pressure inside the seed coat causes the seed coat to crack open
3) An advantage to dormancy is that seeds can be dispersed farther away from a parent plant
4) The root is the first structure that appear during germination.
Step-by-step explanation:
- Germination is the process by which an embryo develops to become a plant. It occurs when the embryo gets swelled and breaks the seed coat. All the basic elements must be present to make germination possible. Appropriate temperature, available water, carbon dioxide, and mineral salts.
- During germination, water diffuses through the seed covers and reaches the embryo. Water swells the seed and cracks the seed coat.
- Dormancy is a strategy of many plant species that allows them to survive when environmental conditions are not appropriate for growing. Besides, during dormancy, seeds can be transported by different agents -such as animals, current water or wind- to new places, far from the progenitor plant. This is another strategy for dispersion.
- The first expression of the plant growth during germination is the root emergence. This root will be the primary root of the mature plant. Turgidity pressure makes the root first to appear. After a few days, in the upper part of the root, a few more roots grow, which will become the secondary roots in adult plants.