Multiple Choice
The first function of feathers was most likely:
A) as protection from predators.
B) to insulate.
C) to communicate with rivals.
D) as color displays in courtship rituals.
E) as protection from parasites.
Correct Answer:

Verified
Correct Answer:
Verified
Q3: The amphibians are believed to have arisen
Q4: Within the chordate classes, the unique characteristic
Q5: Placoid scales are found on:<br>A) fleshy-finned fishes.<br>B)
Q6: Echinoderms are unique because:<br>A) their larvae are
Q7: Birds are most closely related to:<br>A) reptiles.<br>B)
Q9: Compare and contrast characteristics of amphibians and
Q10: The chordate nerve cord is hollow and
Q11: All echinoderms are found:<br>A) in marine habitats.<br>B)
Q12: Sharks detect motion in the water or
Q13: Which term describes an animal that lays