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Which clade does not include humans?
(A) synapsids
(B) lobe-fins
(C) diapsids
(D) osteichthyans
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- Members of Chondrichfhyes are thought to be descended from fishes that had. a cartilaginous skeleton a bony skeleton mucus glands slime glandswhat do fossils tell us about the evolutionary history of the animal kingdom?Which of the following taxa of fish shared most direct common ancestry with the group of animals that evolved into the terrestrial tetrapods? -Subclass Elasmobranchii -Class Neopterygii -Subclass Sarcopterygii -Class Actinopterygii -Class Chondrichthyes
- If nematodes are the most numerous animals, the Arthropoda, including insects, are the most diverse, accounting for more than half of all known animal species. What features have led to the remarkable evolutionary success of this branch?Which of the following statements is true? --Sea stars are dioecious possess dermal branchiae and they have two stomachs --Actinoptergians are fleshy/lobe finned with cycloid scales and a swim bladder --Ophiuroidea have bilateral larvae, and Aristotle's lantern and five arms --Sand dollars are echinoderms with long spines, gills, and pentaradial larvae --Sharks have an operculum, cosmoid scales and eyelidscompare cnidarians to sponges and to the clade containing flatworms, mollusks, and annelids. What features are similar among these groups? What features are different?
- by comparing and contrasting the physical features of a shark, guitar fish and the sting ray, what can you deduce about the evolutionary relationships among the elasmobranchs?The flexibility inherent in a segmented body plan was clearly important to crustacean evolution, but why are crustaceans so much more diverse than annelids, another segmented taxon?Draw a phylogenetic diagram showing only the interrelationships among the following clades: Tetrapoda, Lissamphibia, Amniota, Diapsida, Synapsida, Turtles, Archosauria
- How is it that most, if not all, of the extant animal phyla today evolved during the Cambrian period if so many massive extinction events have taken place since then?Where do invertebrates fit into the evolution history of eukaryotes? Of animals?What do fossil tetrapods tell us about the transition from water to land?