Answer
The union of a male sperm and a female egg to form a zygote is called fertilization. It can be of two types:
External: Occurs in water animals such as fish, etc
Internal: Occurs in land vertebrates
Work Step by Step
as above
Biology 2010 Student Edition
by Miller, Kenneth R.; Levine, Joseph S.
Published by
Prentice Hall
ISBN 10:
9780133669510
ISBN 13:
978-0-13366-951-0
Chapter 34, Endocrine and Reproductive Systems - 34.4 - Fertilization and Development - 34.4 Assessment - Page 1001: 1a
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