BIOLOGY 1M03 Lecture Notes - Lecture 15: Cenozoic, Mesozoic, Flowering Plant
18 Feb 2017
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Document Summary
First true mammals the cainozoic era (65 mya - present) saw spectacular radiation of mammals, following extinction of the dinosaurs this was coupled in time, and probably linked to the diversi cation of angiosperm ( owering) plants. What is an angiosperm? angiosperms are a type of vascular plant that have owers most have endosperm within the seeds most product fruit that contains the seeds angiosperms are now the most diverse group of land plants. Diversi cation of angiosperms by the late cretaceous (~65 mya), angiosperms dominated habitat formally occupied by ferns and cycads large canopy-forming angiosperms replaced conifers as the dominant trees. Relationship between angiosperms and animals angiosperms need animals for pollination, defence and dispersal they reward animals with nectar, fruit, shelter. Climate change in the cainozoic climate changed substantially during the last 65 millions years during warm periods of miocene, palm trees grew in alaska, most of antarctica was not glaciated.
