AGRC1021 Lecture Notes - Lecture 9: Conifer Cone, Pollen Tube, Megaspore
6 Aug 2018
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Document Summary
Plant diversity ii: the evolution of seed plants. The seed arose about 360 million years ago. Seed plants, including gymnosperms and angiosperms, have come the great majority of plant biodiversity. Agriculture, the cultivation and harvest of plants (especially angiosperms), Humans began the cultivation of plants independently in various reg and the americas. This was the single most important cultural change in the history of h from hunter-gatherer societies to permanent settlements. A seed consists of an embryo and it"s food supply, surrounded by a prote. Concept 30. 1 seeda and pollen grains are key adaptations f. A number of terrestrial adaptations contributed to the success of seed pla. These adaptations include the seed, the reduction of the gametophyt. Bryophyte life cycles are dominated by the gametophyte generation, while dominated life cycles. The trend to gametophyte reduction continued in the lineage of vascular p. Seedless vascular plants have tiny gametophytes that are visible to.
