7. List any three outbreeding devices that flowering plants have developed and explain how they help to encourage cross-pollination
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1) UNISEXUALITY in flowering plants prevents autogamy .
2) DOCHOGAMY different maturation time of androecium and gynoecium in the same flower 3) SELF INCOMPATIBILITY the failure of pollen grains from fertilising the ovule
2) DOCHOGAMY different maturation time of androecium and gynoecium in the same flower 3) SELF INCOMPATIBILITY the failure of pollen grains from fertilising the ovule
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