The green algae are the large group of algae where the higher plants emerged from. The green algae include unicellular and colonial flagellates. There are a large number of algae which sums up to be about 6,000 species of green algae. Many of the algae species live their lives as single cells, while other algae species form colonies, coenobia, long filaments, or highly differentiated macroscopic seaweeds.
These are plants that have lignified tissues used for conducting water, minerals, and photosynthetic products through the plant. Vascular plants include the club mosses, ferns, gymnosperms, and angiosperms.
These are plants without a vascular system. They do not have xylem or phloem. Even though these nonvascular plants don't have these particular tissues, they still have tissues that are used for internal transport of water, minerals, and other photosynthesis products.
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