Plants range from microscopic algae to giant greenwoods
Most are vascular (meaning the plant has a transport system) - there are two groups
Angiosperms (roses, apple & corn) - These are the flowering plants - Seeds are completely enclosed in protective tissue layers
Gymnosperms (conifers & pine trees) - Produce naked seeds that are born on surface of reproductive structure rather than are surrounded by tissues
Fewer than 30,000 species of non-vascular plants