Multiple Choice
The spiral valve in the intestine of a shark serves to
A) release strong acids to aid digestion.
B) function as a liver in producing bile salts.
C) entrap food molecules in a mucus strand.
D) slow passage of food and increase absorptive surface area.
E) propel food through the tract at a faster rate.
Correct Answer:
Verified
Correct Answer:
Verified
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