In a bean seed, absorption of water at the beginning of germination is through the
Answer Details
In a bean seed, absorption of water at the beginning of germination is through the micropyle. The micropyle is a small opening in the seed coat that allows water to enter the seed. During the early stages of germination, the seed takes in water through this opening to initiate the metabolic processes that lead to growth.
The water absorbed through the micropyle softens the seed coat, allowing the embryo inside to expand and break through the seed coat. The embryo then develops into the seedling, and the nutrients stored in the seed provide the initial energy for the plant to grow until it can photosynthesize on its own.
While the hilum is the scar on the seed where it was attached to the parent plant, the testa is the outer seed coat, and the plumule is the embryonic shoot that emerges from the seed during germination. However, neither the hilum nor the testa nor the plumule are involved in the absorption of water at the beginning of germination in the bean seed.