BIOLOGY 1M03 Lecture Notes - Lecture 15: Flowering Plant, Mesozoic, Radiocarbon Dating

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Overview: human evolution in its entirely began with the origin of cellular life ~3. 8 billion years ago, focusing on when the mammals were present: the time from our shrew-like insectivorous ancestors scurried ~180 mya until the present. Life(cid:859)s ti(cid:373)eli(cid:374)e: major events in the history of life can be summarized in a timeline broken into four segments, mammals and angiosperms (flowering plants) first appeared in the mesozoic era (the. Age of reptiles: but most extant mammals diversified in the cenozoic era (cid:894)he(cid:374)(cid:272)e, the (cid:862)age of. First true mammals: the cenozoic era (65 mya-present) saw spectacular radiation of mammals, following extinction of the dinosaurs, this was coupled in time, and probably linked to the diversification of angiosperm flowering) plants. Difference between a gymnosperm and an angiosperm: gy(cid:373)(cid:374)osper(cid:373)s produ(cid:272)e o(cid:448)ules that la(cid:272)k a (cid:272)o(cid:448)er (cid:894)(cid:862)(cid:374)aked seeds(cid:863)(cid:895) In angiosperms seeds, can also have a fruit coat around the seed coat (testa).

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