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Classify the following:
Answer variants:
The pollen grain develops a small tube-like structure known as a pollen tube that arises from the germ pore.
The transfer of pollen grains from the anther to the stigma of a flower is called pollination.
The ovary develops into the fleshy part known as the fruit.
 
1.  Pre-fertilization:
 
2.  Fertilization:
 
3.  Post-fertilization: