Campbell Biology in Focus
Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 30, Problem 3TYU

Double fertilization means that

  1. A.    flowers must be pollinated twice to yield fruits and seeds.
  2. B.     B every egg must receive two sperm to produce an embryo
  3. C.     C one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei.
  4. D.    every sperm has two nuclei
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