DENDROLOGY

Detailed explanation-1: -Gymnosperms are vascular plants.

Detailed explanation-2: -The ferns, gymnosperms, and flowering plants are all vascular plants. Because they possess vascular tissues, these plants have true stems, leaves, and roots.

Detailed explanation-3: -Nonvascular plants were the first plants to evolve and do not have vascular tissue. Seedless vascular plants have vascular tissue but do not have seeds. Gymnosperms have seeds but do not have flowers. Angiosperms have vascular tissue, seeds, and flowers.