What is the difference between gymnosperms and angiosperms?

Gymnosperms: naked seeds, they usually have no flowers or fruits, and Gymnosperms are sometimes configured as cones.

Angiosperms: there seeds are enclosed inside an ovary usually a fruit, they have few cells unlike a Gymnosperm, and have no flagella deposited at egg.

oceans

indian ocean

pacific ocean

atlantic ocean

arctic ocean

southern ocean

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.