[Campbell Biology P.889] Which of the following statements correctly describes the process o... | Practice Question

Which of the following statements correctly describes the process of double fertilization in angiosperms or the functions of their floral organs?

  • A: Sepals primarily function in attracting pollinators, while petals protect the floral bud.
  • B: One sperm fertilizes the egg to form the diploid zygote, and the other sperm combines with polar nuclei to form the triploid endosperm.
  • C: Pollination is the fusion of sperm and egg, leading directly to the formation of an embryo.
  • D: Carpels produce pollen grains, and stamens contain ovules.
  • E: Seed dormancy ensures immediate germination upon dispersal.

Explanation

Double fertilization is a unique process in angiosperms where one sperm fertilizes the egg to form a diploid zygote, which develops into the embryo, and the other sperm fuses with the two polar nuclei to form a triploid endosperm, which provides nourishment to the developing embryo. The other options contain inaccuracies regarding floral organ functions or the definition of pollination/seed dormancy.