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第6講 Plant Diversity II : The Evolution of Seed Plants

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章節大綱

L6A
30.1 Seeds and pollen grains are key adaptations for life on land
30.2 Gymnosperms bear "naked" seeds, typically on cones
30.3 The reproductive adaptations of angiosperms include flowers  and  fruits
30.4 Human welfare depends greatly on seed plants

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