BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 24, Problem 9SA
Among living animals, only birds have ________.
| a. a cloaca | c. feathers |
| b. a four-chambered heart | d. amniote eggs |
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Characteristics that evolved in birds to allow for flight includea. reptilian-like scales on the legs.b. a hard-shelled amniotic egg.c. internal fertilization.d. thin, hollow bones in the skeleton.
Among living animals, only birds have_____ . a. a cloaca c. feathers b. amniote eggs d. a four-chambered heart
The only living group of mammals that lay eggs rather than give birth to live young are called:
A) marsupials
B) monotremes
C) placentals
D) eutherians
Chapter 24 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 24 - All chordates have a _______ as embryos. a....Ch. 24 - Prob. 2SACh. 24 - Vertebrate jaws evolved from _______. a. gill...Ch. 24 - Prob. 4SACh. 24 - A divergence from ________ gave rise to tetrapods....Ch. 24 - Reptiles, including birds, belong to one major...Ch. 24 - Reptiles are adapted to life on land by ______. a....Ch. 24 - The closest modern relatives of birds are...Ch. 24 - Among living animals, only birds have ________. a....Ch. 24 - The defining trait of hominins is __________. a....
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- The closest modern relatives of birds are ________. a. crocodilians b. mammals c. turtles d. lizardsarrow_forwardAll vertebrates have _______ . a. a closed circulatory system b. a two-chambered heart c. lungs d. hemolympharrow_forwardVertebrates and tunicates share(A) jaws adapted for feeding.(B) a high degree of cephalization.(C) an endoskeleton that includes a skull.(D) a notochord and a dorsal, hollow nerve cordarrow_forward
- Unlike bony fishes, amphibians havea. ears. b. jaws. c. a circulatory system.d. a heart.arrow_forwardan amniotic egg was crucial to the evolution of vertebrates because it provides the following to the embryo a) cushioning b) gas exchange c) protection from drying out d) the amniotic provides all of these e) nutritionarrow_forward_____have scaleless skin and a heart with three chambers. a. Amphibians c. Ray-finned fishes b. Mammals d. Snakesarrow_forward
- The group of mammals that still lays eggs is referred to as a. Marsupials b. All lay eggs c. Placental Mammals d. Monotremesarrow_forwardMonotremes are unique mammals because they: A. posses hair B. give birth to live young C. secret milk in a pouch D. lay eggsarrow_forwardUnlike Archaeopteryx, modern birds have_______ . a. a long bony tail c. a two-chambered heart b. a toothless beak d. feathersarrow_forward
- A major difference between birds and other reptiles is that birdsa. produce a shelled egg. d. care for their young.b. are ectotherms. e. have air sacs.c. are tetrapods.arrow_forwardReptiles are much more extensively adapted to life on land than amphibians because reptiles a. have a complete digestive tract. b. lay eggs that are enclosed in shells. c. are endothermic. d. go through a larval stage.arrow_forwardWhale skeletons contain nonfunctional pelvic bonesa. as a result of convergent evolution.b. due to catastrophism.c. because whales evolved from ancestors that had hind legs.d. because the bones might be needed for a future adaptation.arrow_forward
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