The diagram shows the cross-section through the carpet of a flower just before fertilization.
Where will the male and female gametes be just before fertilization?
Male gamete travels inside the pollen tube while female gamete is inside the ovule. Pollen tubes penetrate the ovule to release the male nuclei inside it, that why just before fertilization male gamete is at the end of pollen tube while gamete is inside the ovule.
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