Flowering Plants · Botany

What is double fertilization in flowering plants?

  1. Two pollen grains form two separate flowers
  2. Two seeds germinate at the same time
  3. Sperm fuses egg, another fuses polar nuclei
  4. Two leaves develop from one root
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Correct answer: Sperm fuses egg, another fuses polar nuclei

Double fertilization is unique to angiosperms. One sperm fuses with the egg to form the zygote, while the other fuses with the polar nuclei to form endosperm.

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