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Which arrangement reduces self-pollination by spatial separation?

APollen release before receptivity
BAnther and stigma at different positions
CSelf-pollen chemically rejected
DMale and female gametes fuse
Answer & Solution
Correct answer: B. Anther and stigma at different positions
Anther and stigma placed at different positions reduce contact between self-pollen and the receptive stigma. Different timing and genetic rejection are separate mechanisms.
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