Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 32.2, Problem 1CC
Put the following milestones in animal evolution in order from oldest to most recent: (a) origin of mammals, (b) earliest evidence of terrestrial arthropods, (c) Ediacaran fauna, (d) extinction of large, nonflying dinosaurs.
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Chapter 32 Solutions
Campbell Biology
Ch. 32.1 - Summarize the main stages of animal development....Ch. 32.1 - WHAT IF? What animal characteristics would be...Ch. 32.2 - Put the following milestones in animal evolution...Ch. 32.2 - VISUAL SKILLS Explain what is represented by the...Ch. 32.2 - MAKE CONNECTIONS Evaluate whether the origin of...Ch. 32.3 - Compare three aspects of the early development of...Ch. 32.3 - Prob. 2CCCh. 32.3 - Prob. 3CCCh. 32.4 - Prob. 1CCCh. 32.4 - WHAT IF? Suppose ctenophores are basal metazoans...
Ch. 32.4 - Prob. 3CCCh. 32 - Prob. 32.1CRCh. 32 - What caused ihe Cambrian exploston? Describe...Ch. 32 - Describe how body plans provide useful Information...Ch. 32 - Prob. 32.4CRCh. 32 - Prob. 1TYUCh. 32 - The distinction between sponges and other animal...Ch. 32 - Prob. 3TYUCh. 32 - Prob. 4TYUCh. 32 - EVOLUTION CONNECTION A professor begins a lecture...Ch. 32 - WRITE ABOUT A THEME: INTERACTIONS Animal life...Ch. 32 - SYNTHESIZE YOUR KNOWLEDGE This organism is an...
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- Evidence exists that a catastrophic collision between Earth and a large extraterrestrial body occurred 66 mya, resulting in the extinction of (a) worms, mollusks, and soft-bodied arthropods (b) jawless ostracoderms and jawed placoderms (c) dinosaurs, pterosaurs, and many gymnosperm species(d) mastodons, saber-toothed cats, and giant ground sloths (e) ferns, horsetails, and club mossesarrow_forwardWhich of the following is the correct classification for the following chordate animal: These animals are chordates but do not have a backbone or cranium. They have all five features of chordates into adulthood. The notochord extends into its head. Question 27 options: a) Birds b) Anura / Frogs c) Urodela / Salamanders d) Superclass Agnatha e) Monotreme f) Eutharia g) Reptiles (non avian) h) Class Chondrichthyes i) Cephalochordata j) Class Osteichthyes k) Marsupialarrow_forwardWhich of the following is supported by molecular phylogenetic studies? a.) Lobe-finned fish are more closely related to humans than to other fish. b.) Lobe-finned fish are more closely related to other fish than to humans. c.) Lobe-finned fish are more closely related to other fish than to humans. d.) All of the answers are correct e.) Lobe-finned fish are tetrapods.arrow_forward
- Examine the image of the relatedness of vertebrates represented in this phylogenetic tree. Which statements are correctly inferred from this tree? Select all that apply. A) The mammals are the outgroup in this tree. B) Birds and dinosaurs share a recent common ancestor. C) Mammals and birds are more closely related than any other species. D) Turtles are equally as diverged from lizards and snakes as they are from crocodiles. E) Lizards and snakes are more recently diverged from each other than they are from crocodiles.arrow_forwardThe presence of homologous structures in two different groups of organisms suggests that (a) the organisms evolved from a common ancestor (b) convergent evolution has occurred (c) they belong to a polyphyletic group (d) homoplasy has occurred (e) independently acquired characters may evolve when organisms inhabit similar environmentsarrow_forwardIn a comparison of birds and mammals,the condition of having four limbs is(A) a shared ancestral character.(B) a shared derived character.(C) a character useful for distinguishing birdsfrom mammals.(D) an example of analogy rather than homology.arrow_forward
- Which of the following statements regarding the diversification of animals is supported by the current available evidence? a) most animals belong to the clade Bilateria b) sponges are a paraphyletic group of organisms c) ctenophores are basal metazoans d) animals descended from multiple ancestorsarrow_forward375 million years ago, the population of organisms we call Tiktaalik had variation in many aspects of the appendages including the bones, muscles and nerves. What evolutionary force was likely most responsible for rapid adaptation and the relatively rapid evolution of limbs in this lineage? (A) natural selection (B) NONE of these C) mutations D genetic drift (E) speciationarrow_forward"Vertebrae" would be an example of an: I) autapomorphy II) plesiomorphy III) synapomorphy IV) symplesiomorphyarrow_forward
- Geologists discovered fossil evidence of mesohippus, an ancestor of the modern horse. Mesohippus lived in North America about 40 million years ago. Mesohippus was about two feet tall, ran on hooves with three toes, and had large, grinding teeth. What statement is BEST supported by the fossil evidence? A) Ancient horses were once carnivores. B) Horses have evolved over the last 40 million years. Horses migrated from South America into North America. D) Modern-day horses share a common ancestor with all mammals.arrow_forwardWhich of the following is responsible for the early predominant image of Neanderthals as brutish cavemen? a). They had small brain cases with stocky bodies and were always recovered from cave sites b). The fossil evidence reveals that they had little cognitive capacity and had a hunched over posture c). An early fossil find of an Individual suffering from arthritis was assembled and taken as the type specimen foer all Neanderthals, mistakenly giving the idea that Neanderthals were an ape-like, hunched-over species.d). None of the above are truearrow_forwardIn vertebrates, what anatomical structure partially or completely replaces the notochord? 1.) lateral-line system 2.) cartilage or a bony skeleton 3.) endostyle 4.) dorsal hallow nerve cordarrow_forward
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