AP BIOLOGY

Detailed explanation-1: -Final answer: Gymnosperms possess cones as reproductive structures.

Detailed explanation-2: -Gymnosperms – seed plants with cones Gymnosperms are seed plants but their seeds are held in cones. Next time you pick up a pine cone, look for loose seeds inside. Male cones make pollen, which is carried to female cones by the wind.

Detailed explanation-3: -Cone-bearing plants have two types of cones: female cones and male cones. Reproduction begins when one of the pollen grains from inside a pollen sac on the male cone floats through the air to the scale of a female cone. A pollen tube then grows from the pollen grain toward the female ovule.

Detailed explanation-4: -cone, also called strobilus, in botany, mass of scales or bracts, usually ovate in shape, containing the reproductive organs of certain nonflowering plants. The cone, a distinguishing feature of pines and other conifers, is also found on all gymnosperms, on some club mosses, and on horsetails.

Detailed explanation-5: -Gymnosperms produce two types of cones: pollen cones and seed cones. Pollen cones produce the male gametophytes, also called pollen grains. Seed cones produce female gametophytes and are generally larger than pollen cones.