BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 23, Problem 2SA
A great adaptive radiation of animals that occurred during the _______ gave rise to modern animal lineages.
| a. Precambrian | c. Cambrian |
| b. Ediacaran | d. Jurassic |
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Why was the Mesozoic era extinction significant to the history of mammals? a. As photosynthesis slowed, meat-eating mammals prevailed. b. Fewer plankton species meant more open ocean ecosystems for large, aquatic mammals. c. Dinosaur extinctions opened up new habitats to mammals. d. Only the smartest primates knew how to survive the extinction.
Whale 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.
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Chapter 23 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 23 - An ______ develops from a two-layer embryo. a. sea...Ch. 23 - A great adaptive radiation of animals that...Ch. 23 - Prob. 3SACh. 23 - Prob. 4SACh. 23 - Prob. 5SACh. 23 - Prob. 6SACh. 23 - Prob. 7SACh. 23 - Prob. 8SACh. 23 - The ______ include the only winged invertebrates....Ch. 23 - Prob. 10SA
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The genus Homo dates back to about____. a. 3.9 million years ago b. 1.8 million years ago c. 250,000 years ago d. 2.8 million years agoarrow_forwardThe Cambrian Explosion occurred approximately 542 million years ago. During the Cambrian, what ‘exploded’? a. The diversity of species on Earth, including many major animal phyla that exist today b. The Yucatan Peninsula, which was hit by an asteroid c. The quantity of oxygen in the atmosphere due to the expansion of coniferous forests d. Numerous volcanoes worldwide, leading to the fourth mass extinctionarrow_forwardFossils that serve as transitional links allow scientists toa. determine how prehistoric animals interacted with each other.b. deduce the order in which various groups of animals arose.c. relate climate change to evolutionary trends.d. determine why evolutionary changes occur.arrow_forward
- Which factor most likely caused animals and plants in India todiffer greatly from species in nearby southeast Asia?(A) The species became separated by convergent evolution.(B) The climates of the two regions are similar.(C) India is in the process of separating from the rest of Asia.(D) India was a separate continent until 45 million years ago.arrow_forwardDuring the Precambrian, _______. a. atmospheric oxygen concentration declined b. bacteria, archaea, and early eukaryotes arose c. dinosaurs became extinct d. all of the abovearrow_forwardAardvarks, anteaters, and pangolins are only distantly related but are similar in structure and form as a result of (a) homology (b) convergent evolution (c) biogeography (d) vestigial structures (e) artificial selectionarrow_forward
- The fossil nicknamed Lucy was a(n)a. early Homo.b. australopith.c. ardipithecine.d. modern human.arrow_forwardEnergy, the absence of molecular oxygen, chemical building blocks, and time were the requirements for (a) chemical evolution (b) biological evolution (c) the Cambrian radiation (d) the mass extinction episode at the end of the Cretaceous period (e) directed evolutionarrow_forwardOn the geologic time scale, life originated in the_____ . a. Archean c. Phanerozoic b. Proterozoic d. Cambrianarrow_forward
- The time of greatest evolutionary diversification in the history of life occurred during the (a) Cambrian period (b) Ordovician period (c) Silurian period (d) Carboniferous period (e) Permian periodarrow_forwardThe term “Cambrian explosion” refers to (a) an increase in biodiversity. (b) a mass extinction. (c) an atmospheric detonation due to increasing gas concentrations. (d) an oceanic eruption caused by underwater volcanic activity.arrow_forwardThe greatest mass extinction episode in the history of life occurred at what boundary? (a) Pliocene–Pleistocene (b) Permian–Triassic (c) Mesozoic–Cenozoic (d) Cambrian– Ordovician (e) Triassic–Jurassicarrow_forward
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