Topic 4: Plant Diversity II - Seed Plants (Chs. 30, 38)

oldest tree: Methuselah, estimated more than 4600 years old (Bristlecone Pine, Pinus longaeva) sources of timber, paper, resin, cancer drug taxol, etc. “soft” wood (unlike angiosperm trees, no vessels or fibers in xylem) pines as a representative group . over 100 species . native to Northern hemisphere . typically thick bark (survive fires ... ................
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