Question

What are the four main layers of a seed? (Inner to Outer)

Answer 1

The four main layers of a seed, from inner to outer, are the embryo, endosperm, seed coat, and testa and tegmen.

Step-by-step explanation:

The four main layers of a seed, from inner to outer, are as follows:

1. Embryo: The embryo develops from a fertilized egg and includes the first leaf (cotyledon), stem (hypocotyl), and root (radicle).
2. Endosperm: The stored food in a seed that nourishes the embryo until it can produce its own food.
3. Seed coat: The tough protective layer that surrounds the embryo and prevents it from drying out until conditions are favorable for germination.
4. Testa and tegmen: In dicots, the seed coat is further divided into an outer coat called the testa and an inner coat called the tegmen.