AP BIOLOGY

Detailed explanation-1: -gymnosperm, any vascular plant that reproduces by means of an exposed seed, or ovule-unlike angiosperms, or flowering plants, whose seeds are enclosed by mature ovaries, or fruits. The seeds of many gymnosperms (literally, “naked seeds”) are borne in cones and are not visible until maturity.

Detailed explanation-2: -Answer and Explanation: Plants that produce seeds within a cone are known as gymnosperms. Gymnosperm means ‘’naked seed”, and these plants differ from angiosperms in that they do not produce seed within a fruit. On conifers, or trees with needles, you will see many cones scattered throughout.

Detailed explanation-3: -Key Points. In gymnosperms, a leafy green sporophyte generates cones containing male and female gametophytes; female cones are bigger than male cones and are located higher up in the tree.

Detailed explanation-4: -Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones, or solitary as in yew, Torreya, Ginkgo. Gymnosperm lifecycles involve alternation of generations.