Multiple Choice
Which portion of the sperm contains the enzymes needed to penetrate the oocyte?
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27. The Reproductive System
Introduction to the Reproductive System
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Which reproductive adaptation is more characteristic of mammals than amphibians?
A
Metamorphosis
B
Internal fertilization
C
External fertilization
D
Laying eggs in water
Verified step by step guidance1
Understand the reproductive strategies of mammals and amphibians. Mammals typically have internal fertilization, where the sperm fertilizes the egg inside the female's body.
Recognize that amphibians often exhibit external fertilization, where eggs are laid in water and fertilized outside the female's body.
Consider the process of metamorphosis, which is a developmental transformation seen in amphibians, not mammals.
Identify that laying eggs in water is a characteristic of amphibians, as they require a moist environment for their eggs.
Conclude that internal fertilization is a reproductive adaptation more characteristic of mammals, as it allows for greater protection and development of the embryo within the female's body.
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