Final Answer:
The main difference between an Angiosperm and a Gymnosperm lies in their seed development and reproduction. Angiosperms produce seeds enclosed within a fruit, while Gymnosperms have seeds exposed on the surface of cones or similar structures.
Step-by-step explanation:
Angiosperms and Gymnosperms are two major groups of seed-producing plants, and their key distinction is in the structure of their seeds. Angiosperms, also known as flowering plants, produce seeds that are enclosed within a protective structure called a fruit. This adaptation enhances seed protection and facilitates dispersal.
Gymnosperms, on the other hand, have seeds that are not enclosed; they are exposed on the surface of cones or other structures. Examples of Angiosperms include flowering trees, shrubs, and grasses, while Gymnosperms include conifers, cycads, and ginkgoes.
The main difference is in their seed development and reproduction mechanisms.