The most primitive digestive tract is seen in ________.
A) nematodes
B) earthworms
C) salamanders
D) birds
E) insects
Correct Answer:
Verified
Q23: Vitamin B12 deficiency is known as _.
A)pellagra
B)rickets
C)pernicious
Q24: A layer of calcified tissue called _
Q25: All vertebrates cannot synthesize certain polyunsaturated fats
Q26: Which animal has a four-chambered stomach?
A)Rabbit
B)Deer
C)Horses
D)Insects
E)Fish
Q27: Intrinsic factor is made by parietal cells
Q29: Which vitamin deficiency results in scurvy?
A)Folic acid
B)Vitamin
Q30: Bile is made in the _ and
Q31: All mammals rely on intestinal bacteria to
Q32: The islets of Langerhans are in the
Q33: The arrival of _ in the duodenum
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