how does fertilization in human beings take place
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A pregnancy starts with fertilization, when a woman's egg joins with a man's sperm. Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.
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when pollen grain falls on the stigma of the pistil the pollen grain grows a pollen tube downwards through the style towards the female gamets in the ovary
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