16. Which of the following has both endocrine and exocrine activity? (A) the pituitary gland (B) parathyroid glands (C) salivary glands (D) the pancreas

18. Penguins, seals, and tuna have body forms that permit rapid swimming, because _______. (A) all share a recent common ancestor (B) all of their bodies have been compressed since birth by intensive underwater pressures (C) the shape is a convergent evolutionary solution, which reduces drag while swimming (D) this is the only shape that will allow them to maintain a constant body temperature in water

16. Which of the following has both endocrine and exocrine activity?
(A) the pituitary gland
(B) parathyroid glands
(C) salivary glands
(D) the pancreas

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