AP BIOLOGY

Detailed explanation-1: -Trees have numerous defenses to ward off attacks from insects and pathogens. One major defense is resin, which acts as both a physical and chemical defense. In pine species, resin is produced and stored in specialized structures called resin ducts or canals.

Detailed explanation-2: -pine, (genus Pinus), genus of about 115 species of evergreen conifers of the pine family (Pinaceae), distributed throughout the world but native primarily to northern temperate regions.

Detailed explanation-3: -Although resins occur in a variety of flowering resinous plants, they mostly occur in Gymnosperms (a large group of cone-producing plants that include conifers, cycads, Ginkgo, etc.), especially of the Pinaceae family (such as pine, fir, and cedar trees).