Which of the following regulates amphibian metamorphosis?
A) Calcitonin hormone from the adrenals
B) Thyroxine,a hormone secreted by the thyroid gland
C) Estrogen and testosterone from the gonads
D) Growth hormone by the thyroid gland
E) Salt levels from the environment
Correct Answer:
Verified
Q2: Most terrestrial salamanders fertilize eggs using which
Q3: The term "tetrapods"
A)refers to the organisms that
Q4: What was the 350 million-year-old fossil called
Q5: Which is true regarding the oxygen content
Q6: Tetrapods originated in the _ period.
A)Permian
B)Cambrian
C)Carboniferous
D)Devonian
E)Silurian
Q8: The sequence of Eusthenopteron,Acanthostega,and Ichthyostega fossils show
Q9: Moving from fish to amphibians,we see which
Q10: The Urodela
A)are hermaphroditic.
B)are tadpoles when young.
C)retain their
Q11: Amphibians were the first vertebrate invaders of
Q12: Completely terrestrial salamanders
A)have succeeded in avoiding the
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