Mammals that retain their young for a long period of development within the mother's uterus are
A) monotremes.
B) placentals.
C) marsupials.
Correct Answer:
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Q29: Metamorphosis is a feature of
A)amphibians.
B)mammals.
C)fish.
D)reptiles.
E)vertebrates.
Q30: The most primitive mammals incubate their eggs
Q31: _ prompts monthly preparation of uterus for
Q32: Ovulation occurs by the sudden secretion of
A)estrogen
Q33: Reproduction in reptiles compares to reproduction in
Q35: The only mammals that lay eggs are
Q36: This process is absent in mammals with
Q37: Which of the following is not correctly
Q38: _ stimulates production of milk.
A)LH
B)Testosterone
C)Progesterone
D)Prolactin
E)Oxytocin
Q39: An organism in which internally-fertilized eggs are
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