Gymnosperms and angiosperms together make up the spermatophytes, or seeding plants. However, gymnosperms differ from angiosperms because of their characteristic exposed seeds. The leaves of a gymnosperm are generally needles that remain green year-round. Gymnospermous plants are taxonomized into four categories; coniferophyta, gnetophyta, ginkgophyta, and cycadophyta. The sago palm seen here belongs to the group cycadophyta, which typically exhibit stout woody trunks and heads of thin brittle leaves.
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