Bio 117 Exam 2 | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+

Which of the following is NOT a characteristic of ALL animals? A. Heterotrophic B. Together, they form a monophyletic group. C. Multicellular organisms D. Cells lacking cell walls. E. All animals have true tissues and organs. Correct Answer: All animals have true tissues and organs. Which of the following are characteristics of Phylum Cnidaria? (Select All that Apply) A. Specialized stinging cells B. 2 True Tissues C. Complete digestive system D. Nerve Net Correct Answer: A. Specialized stinging cells B. True Tissues D. Nerve Net Which of the following is NOT a characteristic of a protostome? A. Cells have spiral cleavage by the 8-cell stage of development. B. Indentation (or pore) that begins gastrulation becomes the mouth of the animal. C. Mesoderm "pinches" off from endoderm during development. D. Are thought to have diverged from deuterostomes in evolutionary history. Correct Answer: C.