Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 27.4, Problem 1BC
Look ahead to Figure 33.2c. In what ways arecrocodilians similar to birds and mammals?
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Figure 15.33 Which of the following statements about common features of chordates is true?a. The dorsal hollow nerve cord is part of the chordate central nervous system.b. In vertebrate fishes, the pharyngeal slits become the gills.c. Humans are not chordates because humans do not have a tail.d. Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column.
From the video: What term should we use to describe the evolution of body types in the Anole lizards?
Visual Skills Use the diagram to determine which happened first during the evolutionof cetaceans: changes in hind limb structure or the origin of tail flukes. Explain.
Chapter 27 Solutions
Principles of Biology
Ch. 27.1 - Prob. 1CCCh. 27.1 - Which of the following is not a defining...Ch. 27.1 - Prob. 2TYKCh. 27.2 - Prob. 1BCCh. 27.2 - What features distinguish ray-finned fishes from...Ch. 27.2 - Prob. 2CCCh. 27.2 - Prob. 1TYKCh. 27.2 - Prob. 2TYKCh. 27.2 - Prob. 3TYKCh. 27.3 - Prob. 1CC
Ch. 27.3 - Prob. 2CCCh. 27.3 - Prob. 1TYKCh. 27.3 - Prob. 2TYKCh. 27.4 - What are the other critical innovations of...Ch. 27.4 - Prob. 2CCCh. 27.4 - Look ahead to Figure 33.2c. In what ways...Ch. 27.4 - Prob. 3CCCh. 27.4 - The membrane of the amniotic egg that serves as a...Ch. 27.4 - Prob. 2TYKCh. 27.4 - Prob. 3TYKCh. 27.4 - Prob. 4TYKCh. 27.5 - Prob. 1TYKCh. 27 - Prob. 1TYCh. 27 - The presence of a bony skeleton, an operculum, and...Ch. 27 - Prob. 3TYCh. 27 - Which clade does not include frogs? vertebrates...Ch. 27 - Prob. 5TYCh. 27 - The outermost membrane of the amniotic egg is the...Ch. 27 - Which characteristic qualifies lizards as...Ch. 27 - Prob. 8TYCh. 27 - Prob. 9TYCh. 27 - Prob. 10TYCh. 27 - Prob. 1CCQCh. 27 - Why arent all reptiles endothermic if both birds...Ch. 27 - A principle of biology is that all species (past...Ch. 27 - Prob. 1CBQCh. 27 - Prob. 2CBQ
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- Lobe-finned fishes are important because theya. were the first vertebrates.b. were the earliest animals.c. are closely related to tetrapods.d. lack jawsarrow_forwardWhy are plesiadapiforms most likely the earliest primate ancestors? A. They do not have a postorbital bar or plate B. Their eyes are forward-facing C. They have grasping fingers D. They have clawsarrow_forwardAll chordates have a _______ as embryos. a. backbone b. jaws c. notochord d. kidneysarrow_forward
- Figure 15.3 Which of the following statements is false? a. Eumetazoa have specialized tissues and Parazoa do not. b. Both acoelomates and pseudocoelomates have a body cavity. c. Chordates are more closely related to echinoderms than to rotifers according to the figure. d. Some animals have radial symmetry, and some animals have bilateral symmetry.arrow_forwardLOOK AND ANALYZE AT THE ILLUSTRATION BELOW. THE ANSWER WILL BE BASED ON THE ILLUSTRATION For about how many years of geological time have the dinosours existed on earth?? Did dinosours exist at the same time as humans? How do scientists determine when an era begins and when it ends? What is the purpose of making a geological timelinearrow_forward1 options: -bony appendages -hard scales -shelled eggs 2 options: -aminotes -vertebrates -tetrapods -crainatesarrow_forward
- You decide that it is a eutherian rather than a marsupial. How do you know based on its morphology/anatomy?arrow_forwardNew World monkeys_____ . a. lack a tail c. are dry-nosed primates b. are bipedal d. include human ancestorsarrow_forwardA swim bladder is a gas-filled sac that helps fish maintainbuoyancy. The evolution of the swim bladder from the airbreathing organ (a simple lung) of an ancestral fish is anexample of(A) exaptation.(B) changes in Hox gene expression.(C) paedomorphosis.(D) adaptive radiationarrow_forward
- Lampreys are jawless fish. Which conclusion about lamprey evolution is supported by the evidence in the diagram? A. Lampreys developed after hinged jaws formed. B. Lampreys once had hinged jaws but lost them during evolution. C. Lampreys are invertebrates and could not develop hinged jaws. D. Lampreys diverged from other vertebrates before hinged jaws evolved.arrow_forwardwrite a paragraph that describe the key adaptation that were associated with the transition from aquatic life to terrestrial life in vertebrates.arrow_forwardMatch the benefit to the correct chordate adaptation. (match each number to the correct letter) 1. allows organisms to walk on land 2. allows organisms to lay eggs on land, without water 3. allows organisms to generate their own heat 4. provides a rigid structure for muscles A.bony skeleton B. Ectotherm C. Tetrapod D. Amniotic eggs E. Endotherm F. Seedsarrow_forward
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