1. Parts of a Seed

2. Outer Seed Parts seed coat hilum
(protects seed from damage, disease, insects)
(dent on side of seed)

3. Three Main Parts of a Seed
cotyledon/ endosperm
(tiny plant)
(food supply)
(outer protective covering)

4. Internal Seed Parts
seed coat
cotyledon/endosperm

5. Internal Seed Parts Embryo Plumule Epicotyle Hypocotyl Radicle
Seed Coat
Cotyledon

6. Seed Vocabulary embryo – tiny plant inside seed
cotyledon – food source for embryo, once food supply is used up the plant manufactures its own food through photosynthesis
plumule – embryonic leaves
epicotyle- upper stem
hypocotyle – middle stem
radicle – roots
germination – process through which the embryo begins to grow; moisture level, light, and temperature are environmental conditions that trigger germination