spermoderm

Example:Similar to spermoderm, perisperm serves as an extra layer of protection for the seed.

Definition:A thin outer layer of the seed coat, similar to spermoderm, which often surrounds the core of the seed and provides additional protection.

Example:The testa, although often synonymous with spermoderm, refers specifically to the outermost layer of the seed coat.

Definition:The outermost layer of the seed coat, which may also be described as the spermoderm in certain contexts.