The Cenozoic Era is often referred to as the "Age of Mammals".What primary geological and evolutionary events that occurredduring this era led to this classification?The rise of flowering plants and the associated increase in insectpopulationsThe diversification and dominance of dinosaursThe extinction of non-bird dinosaurs and the subsequent adaptiveradiation of mammalsThe first appearance of multicellular life

The four eras are Precambrian, Paleozoic, Mesozoic, and Cenozoic. Prominent events that happened in…

The Cenozoic Era is often referred to as the "Age of Mamm What primary geological and evolutionary events that occ during this era led to this classification? The rise of flowering plants and the associated increase in inse populations The diversification and dominance of dinosaurs The extinction of non-bird dinosaurs and the subsequent adap radiation of mammals The first appearance of multicellular life

The Cenozoic Era is often referred to as the "Age of Mamm What primary geological and evolutionary events that occ during this era led to this classification? The rise of flowering plants and the associated increase in inse populations The diversification and dominance of dinosaurs The extinction of non-bird dinosaurs and the subsequent adap radiation of mammals The first appearance of multicellular life

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 1CT

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The diversity of modern vertebrates was shaped in partby mass extinctions. The most severe extinction eventwe know of occured at the border between the Permianand Triassic periods about 250 million years ago. Anestimated 96 percent of the marine species and 70 percentof land species disappeared in what is sometimes called“The Great Dying.” The cause of this mass extinctionremains under investigation. Suggested causes includean asteroid impact, extreme volcanic activity, or a sudden release of carbon dioxide from deposits on the sea floor. Which groups of vertebrates were present when this mass extinction event occurred? Which evolvedafterward?
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.
During the Precambrian, _______. a. atmospheric oxygen concentration declined b. bacteria, archaea, and early eukaryotes arose c. dinosaurs became extinct d. all of the above
Which of the following periods is the earliest during which animals may have appeared? a. Ordovician period b. Cambrian period c. Ediacaran period d. Cryogenian period
Multicellular animals of the Ediacaran (Vendian) Fauna, though now known from multiple areas around the world, were first found at a locality at/in _______________________________________________. Group of answer choices SE Australia Northern Russia by the White Sea NW Canada Nova Scotia, NE Canada
The “age of fishes”, which began with the Cambrian Period (about 541 million years ago), and ended with the Permian/Triassic extinction event (about 252 million years ago), is also known as: the Mesozoic Era the “age of birds and mammals” the Cenozoic Era the “age of reptiles” the Paleozoic Era
Most animal lineages evolved during the ____ period. a. Devonian b. Cambrian c. Silurian d. Cretaceous e. Ordovician
Why is animal evolution during the early Cambrian referred to as an “explosion”?
The great apes made their first appearance in the fossil record between 23 and 2.6 MYA, which: represents the starting and ending dates for the Paleogene Period represents the starting and ending dates for the Cretaceous Period represents the starting and ending dates for the Jurassic Period represents the starting and ending dates for the Neogene Period represents the starting and ending dates for the Triassic Period
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 period
Scientists who study forms of marine life that lived more than200 million years ago usually obtain fossils not from the sea floor, butfrom areas that were once under sea and have been uplifted onto thecontinents. Why?
how did the K-Pg (aka Cretaceous–Paleogene) mass extinction gave new ecological opportunities to mammals leading to adaptive radiation?