The duckbill platypus is an exception to many mammals because it
A) lacks hair.
B) is ectothermic,or "cold-blooded."
C) doesn't secrete milk.
D) doesn't give live birth but lays eggs.
E) is found in Australia.
Correct Answer:
Verified
Q17: The cartilaginous fishes include all EXCEPT
A)lampreys.
B)dogfish shark.
C)skates.
D)rays.
E)whale
Q18: Amphibians are NOT considered to be fully
Q19: Sharks
A)have bone skeletons.
B)lack jaws.
C)have a keen sense
Q20: In vertebrates,the _ is/are usually replaced by
Q21: Which of these is a proper contrast
Q23: Which of these characteristics is NOT associated
Q24: Which of these characteristics is NOT found
Q24: Endothermic animals with four-chambered hearts include the
A)
Q25: Which of the following features is NOT
Q40: Which type of mammal lays eggs?
A) monotremes
B)
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