Seed Formation and Types

What is the outer layer of a seed called?

Which type of seed has endosperm present to nourish the embryo?

What do non-endospermic seeds lack that is typically present in endospermic seeds?

Which of the following is a type of endospermic seed?

Which part of the dicot seed serves to store food for the developing embryo?

Seed Formation

Seeds are formed from a zygote.
Seeds have two layers.
The outer layer is called the testa.
The inner layer is called the tegmen.

Types of Seeds

Endospermic seeds: These seeds have endosperm. Endosperm is the nutritive tissue that provides nourishment for the developing embryo.
Albuminous seed or Endospermic seed: Seeds that contain endosperm.
Non-endospermic seeds: These seeds do not have endosperm. The cotyledons store food for the developing embryo.
Non-albuminous seed or Non-endospermic seed: Seeds that do not contain endosperm. Food is stored in the cotyledons.
Some seeds consume all the endosperm.

Seed Types

Monocot seeds: Monocots have one cotyledon (embryonic leaf).
Dicot seeds: Dicots have two cotyledons.
Dicots have a seed coat, hilum (scar where the ovule was attached to the ovary wall), micropyle (a small opening that allows water to enter the seed), cotyledons (seed leaves), radicle (the embryonic root), and plumule (the embryonic shoot).

Explore the fascinating world of seed formation and classification with this quiz. Learn about the differences between endospermic and non-endospermic seeds, as well as monocot and dicot seeds. Test your knowledge on various seed structures and their functions.