DENDROLOGY

Detailed explanation-1: -The male reproductive organ of an angiosperm is stamen or androecium and the female reproductive organ of an angiosperm is pistil or carpel or gynoecium.

Detailed explanation-2: -Flowers are their reproductive structures, which produce fruits containing one to many seeds.

Detailed explanation-3: -Gymnosperm means naked seed. These plants do not have flowers. And so, the seeds are not enclosed inside any specialized structure like the ovary seen in the other group of plants i.e. angiosperms. Rather, the seeds develop on the surface of the reproductive structures of the plants.