1. Grains have endosperm in mature seed, but trees don’t.
= stored food
Embryo = baby plant
Grains have endosperm in mature seed, but trees don’t.
All nutrients in embryo, including cotyledons.

2. Epigeous germination in honey locust.
Epigeous germination in honey locust.
Cotyledons above ground for photosynthesis.
Typical of most tree species.

3. Hypogeous germination in oak. Fleshy cotyledons remain below ground.
Hypogeous germination in oak.
Fleshy cotyledons remain below ground.
Stored food provides E to produce root system.