Angiosperms    - Angiosperms are plants that have covered seeds such as oaks and maples.  They have vessels.  Angiosperms have phenol-based substances mostly as protection compounds. Gymnosperms have isoprene or terpene-based substances mostly as their protection compounds and have tracheids, not vessels.




Ring Porous

Diffuse Porous

Semi-Ring Porous

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