Pinophyta | Encyclopedia.com
2018年6月8日 · Pinophyta (pī´nŏf´ətə), division of the plant kingdom consisting of those organisms commonly called gymnosperms. The gymnosperms, a group that includes the pine, have stems, roots and leaves, and vascular, or conducting, tissue (xylem and phloem).
Conifer - Encyclopedia.com
2018年5月21日 · Conifer (common name for phylum Pinophyta) is a type of tree that thrives in temperate and boreal climates. Characterized by seed-bearing cones, conifers typically have narrow, needle-like leaves covered with a waxy cuticle and …
Polypodiophyta - Encyclopedia.com
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Gymnosperm - Encyclopedia.com
2018年5月14日 · Gymnospermae Formerly, a subdivision of the seed plants (Spermatophyta), but now regarded as a group of plants that are not closely related, and ‘gymnosperm’ is used only informally to describe what are now classified as 4 separate divisions: Ginkgophyta, Cycadophyta, Coniferophyta (Pinophyta), and Gnetophyta.
Evolution Of Plants - Encyclopedia.com
2018年5月18日 · Evolution of Plants Modern classification systems, based largely on molecular evidence, divide living organisms into three domains: Bacteria (also called Eubacteria), Archaea, and Eukarya.
Economic Importance of Plants - Encyclopedia.com
Economic Importance of Plants Plants are extremely important in the lives of people throughout the world. People depend upon plants to satisfy such basic human needs as food, clothing, shelter, and health