How do angiosperm seeds differ from gymnosperm seeds?
Angiosperms are flowering plants where the seeds are found in an ovary. Gymnosperms are evergreen plants where the seeds are naked, as in without an ovary.
In angiosperms the pollen from the anther or male part of the plant ir released and when it lands on the stigma it travels into the ovary to fertilize an ovule. The seeds will develop inside the ovary which in plants like tomatoes or apples will become the fruit surrounding the seeds.
In gymnosperms cones can be male or female, when they develop fully the male cone release pollen that finds its way to a female cone and fertilizes the ovule. There is no ovary and no fruit, the seed will develop and be released.