Which structure is not an innovation that occurred during vertebrate diversification?
Answer: Exoskeleton
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Deuterostomes
- An owner of a small zoo houses a lemur, some gibbons, and two chimpanzees. What behavior or trait would zoo visitors likely see exhibited by all of these animals as well as by the zookeeper?
- Which vertebrates lack jaws?
- What is a unique feature of marsupial reproduction?
- Which of the following statements about reptiles is true?
- What is the name given to the group of species on the branch leading to contemporary humans?
- Which of the following statements is a component of the out-of-Africa hypothesis?
- Which of the following deuterostomes is most likely to be found in nature?
- Which of the following statements about tetrapod limbs is true?
- Amniotic eggs have four membranes. Which membrane is correctly matched with its function?
- How do viviparity and the placenta affect mammalian reproduction?
- What organism would possess these structures: a ring of nerve cells around the mouth, a series of fluid-filled canals, and tube feet?
- Which two features are possessed by all vertebrates at some point in their life?
- Which of the following statements best represents evidence supporting the leading hypothesis regarding the evolution of jaws in vertebrates?
- Which characteristic is common to all animals in the deuterostome lineage?
- Which trait is a diagnostic feature of echinoderms?
- What defines a chordate?
- Which of the following statements about bone found in early vertebrates is correct?
- Which structure represents a key innovation that arose during vertebrate diversification?
- True or false? An organism that is radially symmetric has many well-developed head regions.
- Which characteristic distinguishes echinoderms from the other two deuterostome lineages?
- Which of the following statements about vertebrates is true?
- Which characteristics define a chordate?
- Which structure can be used for feeding and gas exchange?
- Which statement about deuterostomes is correct?
- Which of the following statements about deuterostomes is false?
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