HORTICULTURE

Detailed explanation-1: -The largest group of gymnosperms are conifers, which comprise giant trees that can reach up to the height of 110 meters. They are the largest group due to the presence of six-hundred and thirty species of the total eight-hundred and sixty species of gymnosperms found on the planet.

Detailed explanation-2: -Gymnosperms are plants that have seeds but no flowers. The seeds of these plants are on cones or in cups. Most gymnosperms are evergreen. Gymnosperms include conifers, cycads and the ginkgo.

Detailed explanation-3: -By far the most abundant group of gymnosperms is the conifers: pines, spruces, firs, hemlocks, cypresses, cedars, junipers, redwoods and relatives.

Detailed explanation-4: -Zamia pygmaea is the smallest gymnosperm, and Sequoia sempervirens is the highest.