Why are seeds an evolutionary advantage for seed plants? Seeds allow for the transport of water and nutrients.
Seeds develop into adults without sexual reproduction.
Seeds protect and nourish young, growing plants.
Seeds provide the materials for photosynthesis.

Seeds protect and nourish young, growing plants.

Explanation:

Seeds allow for young plants to be protected in the hard case of the seed.

Seeds also contain a food supply that allows for the young plants to be nourished.

So, seeds are an evolutionary advantage for plants because they protect and nourish growing plants.

geologic time scale (for gradpoint) =)