Endospermic dicots

Definition

Endospermic dicots are a type of dicotyledonous plant where the seeds retain some endosperm at maturity. This endosperm provides nutrients to the developing embryo within the seed.

5 Must Know Facts For Your Next Test

1. Endospermic dicots have two cotyledons in their seeds.
2. The endosperm in these seeds is not completely absorbed by the cotyledons during seed development.
3. Examples of endospermic dicots include castor bean and coffee.
4. The presence of endosperm distinguishes them from non-endospermic (exalbuminous) dicots, which fully absorb the endosperm into their cotyledons.
5. The retained endosperm in these seeds serves as an additional nutrient source for the seedling upon germination.

Review Questions

• What differentiates an endospermic dicot from a non-endospermic dicot?
• Name two examples of plants that are classified as endospermic dicots.
• Why is the retention of endosperm significant for seedling development?

Related terms

Cotyledon: one of the first leaves to appear on an embryo of a seed plant, involved in nutrient absorption during germination

Endosperm: a tissue produced inside the seeds of most flowering plants following fertilization, providing nutrition to the developing embryo

Dicotyledon: a group of flowering plants whose seeds typically have two embryonic leaves or cotyledons