BIO 200 Lecture Notes - Lecture 14: Photosynthetic Pigment, Brown Algae, Zygote
28 Oct 2014
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Plants are completely unbounded by ploidy, hybridize easily and regularly completely breaking down our understanding of what it means to be a species, they"re mostly hermaphroditic and they"re widely successful without being able to move. Around a bya a species like modern green algae (this is a modern chlamydominous species) arose that counts as it"s descendents all of the green plants that follow. Around 500 mya the first land plants arise that have evolved from this ancestor. Land plants really make a big shift in the organisms we"ve been talking about so far because most all plants are multicellular. The few unicellular are like this green algae and many people don"t even count as plants but rather relate them more to the protists we talked about. As we move through plant evolution we keep getting bigger until we reach some of the largest, longest lived, and tallest organisms on earth.
