Ch 32-34 test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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Whatever its ultimate cause(s), the Cambrian explosion is a prime example of _____. | show 🗑
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show | true tissues
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show | most animals derive their nutrition by ingesting materials
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Which of the following is most directly involved in the evolution of these variations in metamorphosis? | show 🗑
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Which of the following processes contributed the most to the successful evolution of the millions of animal species? | show 🗑
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Which of the following organisms was most likely the most recent common ancestor of all animals? | show 🗑
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One hypothesis suggests that the Cambrian explosion was caused by the rise of predator-prey relationships. This hypothesis is best supported by an increased incidence of which of the following fossil traces? | show 🗑
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show | the origin of hox genes and the addition of new microRNAs
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show | arthropods have had more time to coevolve with land plants than have vertebrates
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Which of the following characteristics is unique to animals? | show 🗑
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A researcher is trying to construct a molecular-based phylogeny of the entire animal kingdom. Assuming that none of the following genes are absolutely conserved, which of the following genes would be the best choice on which to base the phylogeny? | show 🗑
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show | predation by new species, faster movement by new species, and increased developmental flexibility by new species
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show | it contributed to a hydrostatic skeleton, allowing greater range of motion
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The distinction between sponges and other animal phyla is based mainly on the absence versus the presence of | show 🗑
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show | Brachiopoda have a lophophore and Chordata do not.
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Which of the following is an advantage of using molecular data rather than morphological data for phylogenetic analysis? | show 🗑
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show | atmospheric changes, changes in the regulation of development, predator-prey relationships
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Which of the following characteristics is exhibited by most hydrozoans? | show 🗑
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show | Bdelloid rotifers gain genetic variation by absorbing DNA from the external environment
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Which of the following statements describes how healthy corals appear brightly colored? | show 🗑
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Which of the following animal groups is entirely aquatic? | show 🗑
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show | hydrostatic skeleton
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show | grow in conjunction with the shedding of their exoskeleton
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Which phylum is characterized by animals that have a segmented body? | show 🗑
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show | filter feeding
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Which of the following characteristics is shared by both cnidarians and flatworms? | show 🗑
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You find what you believe is a new species of animal. Which of the following characteristics would enable you to argue that it is more closely related to a nematode than it is to an annelid? | show 🗑
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show | Parasites do not generally kill their hosts; thus they can feed on the same host throughout the host's normal life span and do not have competition from decomposers.
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show | Cnidarians are diploblasts that produce complex, capsule-like organelles and
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show | adaptive radiation
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show | true tissues
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Both animals and fungi are heterotrophic. Which of the following distinguishes animal heterotrophy from fungal heterotrophy? | show 🗑
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Which of the following is most directly involved in the evolution of these variations in metamorphosis? | show 🗑
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Which of the following processes contributed the most to the successful evolution of the millions of animal species? | show 🗑
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Which of the following organisms was most likely the most recent common ancestor of all animals? | show 🗑
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One hypothesis suggests that the Cambrian explosion was caused by the rise of predator-prey relationships. This hypothesis is best supported by an increased incidence of which of the following fossil traces? | show 🗑
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Which of the following genetic processes may be most helpful in accounting for the Cambrian explosion? | show 🗑
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show | arthropods have had more time to coevolve with land plants than have vertebrates
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Which of the following characteristics is unique to animals? | show 🗑
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A researcher is trying to construct a molecular-based phylogeny of the entire animal kingdom. Assuming that none of the following genes are absolutely conserved, which of the following genes would be the best choice on which to base the phylogeny? | show 🗑
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Which of the following factors most likely contributed to the extinction of many Ediacaran life forms? | show 🗑
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show | it contributed to a hydrostatic skeleton, allowing greater range of motion
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The distinction between sponges and other animal phyla is based mainly on the absence versus the presence of | show 🗑
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show | Brachiopoda have a lophophore and Chordata do not.
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show | Molecular data is based on genetic relationships rather than morphological similarities.
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Animal life changed greatly during the Cambrian explosion, with some groups expanding in diversity and others declining. What are the current hypotheses that explain these trends? | show 🗑
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show | both polyps and medusa forms
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show | Bdelloid rotifers gain genetic variation by absorbing DNA from the external environment
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show | they host symbionts with colorful photosynthetic pigments
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Which of the following animal groups is entirely aquatic? | show 🗑
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Against which of the following do the circular and longitudinal muscles of annelids work? | show 🗑
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show | grow in conjunction with the shedding of their exoskeleton
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Which phylum is characterized by animals that have a segmented body? | show 🗑
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Which of the following feeding strategies is most likely to be used by aquatic organisms? | show 🗑
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show | a digestive system with a single opening
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show | it has a hemocoel
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show | Parasites do not generally kill their hosts; thus they can feed on the same host throughout the host's normal life span and do not have competition from decomposers.
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Some invertebrates combine morphological simplicity with features of great structural or biochemical complexity. Select all correct examples of this statement. | show 🗑
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You find a multi-legged animal in your garden and want to determine if it is a centipede or a millipede. Which of the following characteristics would allow you to make this distinction? | show 🗑
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show | nematoda
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Which of the following combinations of phylum and description is correct? | show 🗑
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show | the cyclostomes and the gnathostomes
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In early chordates, the primitive pharyngeal slits carried out which of the following functions? | show 🗑
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Which of the following is a characteristic of all chordates at some point during their life cycle? | show 🗑
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show | feeding
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show | feet with digits
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In which of the following ways did the evolution of the jaw contribute to diversification of early vertebrate lineages? | show 🗑
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show | placoderms
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Ancient fossils that seem to be an intermediate stage in the evolution from fish to tetrapods had which of the following characteristics? | show 🗑
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Which of the following organisms is considered the most recent common ancestor of living tetrapods? | show 🗑
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show | tetrapods are no longer tied to the water for reproduction
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show | convergent evolution
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Which of the following characteristics allowed early gnathostomes to become successful predators? | show 🗑
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Which of the following are the only extant animals that descended directly from dinosaurs? | show 🗑
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show | These bones can be observed to move from the developing jaw to the developing middle ear in mammalian embryos
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show | have some embryonic development outside the uterus
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show | Homo sapiens is the only surviving member of a highly branched evolutionary tree of hominin species.
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Which of the following chordate groups include(s) humans? | show 🗑
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Which of the following claims about human evolution is most consistent with current scientific understanding? | show 🗑
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show | primates, anthropoids, apes, hominins, Homo
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show | they occur in Australia and the Americas
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show | endothermy
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How could the origin of organisms such as dinosaurs, whose gait allowed them to move without compressing their lungs, have led to emergent properties? | show 🗑
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Created by:
kingsleya27