Which of these animals has a gastrointestinal tract?
A) sponge
B) hydra
C) flatworm
D) earthworm
E) salamander
Correct Answer:
Verified
Q3: Rumen of the first stomach of ruminants
Q4: In humans,and other vertebrates,the digestive system consists
Q5: The mixture of partially digested food and
Q6: The strong hydrochloric acid present in the
Q7: The process in which amino acids and
Q9: Which of these is not secreted by
Q10: Because of the hepatic portal vein,the _
Q11: The epithelial wall of the small intestine
Q12: The activities of the characteristic layered structure
Q13: Most digestion occurs in the first 25
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