Seed large; the apex or radicular extremity of the seed-coat separable as an operculum or lid (as in Cabomba, etc.).
On the other hand, indehiscent fruits discharge these functions for the embryo, and the seed-coat is only slightly developed.
The character of the seed-coat bears a definite relation to that of the fruit.
Special outgrowths, arils, of the seed-coat are of frequent occurrence.
During maturation the accumulation of carbon dioxide is due to the seed-coat becoming impermeable to it.
Amygdal decorticat, L. Almonds from which the husk or seed-coat has been removed.
The seed itself, which is contained within the testa or seed-coat, consists essentially of the young plant or embryo.
The seed fills the cavity fully and the pericarp fuses with the seed-coat and so they are inseparable.
There is a small deposit of nourishment between the seed-coat and the embryo: this may for the present be left out of the account.
|seed coat |
The outer protective covering of a seed. The seed coat develops from the integument of the ovule. Also called testa.