Campbell Biology in Focus (2nd Edition)
Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 36, Problem 2TYU

The cortical reaction of sea urchin eggs functions directly in

  1. A.    the formation of a fertilization envelope.
  2. B.     the production of a fast block to polyspermy.
  3. C.     the generation of an electrical impulse by the egg.
  4. D.    the fusion of egg and sperm nuclei.
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Identify the indicated cavity (Fucus). a. antheridia b. conceptacel c. receptacle d. oogonium e. none of these
Identify the indicated structure (Saprolegnia). a. antheridium O b. oospore c.sperm d. auxospore e. tetraspore Of. zygospore
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