cross-pollinating 相關
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...male and female parts, right? If a plant only produce one sex, how can they cross pollinate ? 2009-12-30 19:50:24 補充： If male and female cones are...
... Saguaro can only be fertilized by cross -pollination -- pollen from a different cactus. The sweet nectar...and insects, which in acquiring the nectar, pollinate the Saguaro flower. Unlike the Queen...
..., the flowers open and remain receptive to insect cross pollination during the day; if this is not accomplished, the flowers self pollinate as they are closing. Self pollination, or more generally...
cross-pollinating 相關
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