Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 27, Problem 15RQ
The time between 542-488 million years ago marks which period?
- Cambrian period
- Silurian period
- Ediacaran period
- Devonian period
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The eon comprising the Cambrian period up to the present is called the (1). It is divided into three eras: Paleozoic, Mesozoic, and Cenozoic. The Paleozoic era, first (2) appeared. Finally, the Cenozoic era is where (3), flourished, lasting up to this day.
The largest and most deadly of all Mass Extinctions in the history of Earth came at the end of the
Period, when only 5% of the existing species survived. Nobody knows exactly
what caused this event, so it remains a mystery to this day.
Quaternary
Devonian
Ordovician
Permian
please see attached
Chapter 27 Solutions
Biology 2e
Ch. 27 - Figure 27.5 If a Hox 13 gene in a mouse was...Ch. 27 - Figure 27.6 Which of the following statements is...Ch. 27 - Figure 27.9 Which of the following statements...Ch. 27 - Which of the following is not a feature common to...Ch. 27 - During embryonic development, unique cell layers...Ch. 27 - Which of the following phenotypes would most...Ch. 27 - Which of the following organisms is most likely to...Ch. 27 - Which of the following is not possible? radially...Ch. 27 - An animal whose development is marked by radial...Ch. 27 - Consulting the modern phylogenetic tree of...
Ch. 27 - Which of the following is thought to be the most...Ch. 27 - As with the emergence of the Acoelomorpha phylum,...Ch. 27 - Which of the following periods is the earliest...Ch. 27 - What type of data is primarily used to determine...Ch. 27 - The time between 542-488 million years ago marks...Ch. 27 - Until recent discoveries suggested otherwise,...Ch. 27 - Plant life first appeared on land during which of...Ch. 27 - Approximately how many mass extinction events...Ch. 27 - Why might the evolution of specialized tissues be...Ch. 27 - Describe and give examples of how humans display...Ch. 27 - How have Hox genes contributed to the diversity of...Ch. 27 - Using the following terms, explain what...Ch. 27 - Explain some of the advantages brought about...Ch. 27 - Describe at least two major changes to the animal...Ch. 27 - How is it that morphological data alone might lead...Ch. 27 - Briefly describe at least two theories that...Ch. 27 - How is it that most if not all, of the extant...
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- According to Scottish geologist Charles Lyell, the Cenozoic Era (including the Eocene, Miocene, and Pliocene epochs) extended over which of the following time periods in the fossil record? the Paleozoic Era, from the start of the Cambrian into the Permian Period the “age of reptiles”, from 252 million years ago to 66 million years ago the “age of birds and mammals”, from 66 million years ago to the present day the “age of fishes”, from 541 million years ago to 252 million years ago the Mesozoic Era, from the start of the Triassic into the Cretaceous Periodarrow_forwardwhy is it not 55-34; Eocene if the Eocene period was 55 million - 34 million years ago as opposed to the Paleocene which was 65 million - 55 million years ago?arrow_forwardGiven the nautiloid suture pattern what can you infer about their habitat in the past and present?arrow_forward
- Given the life-style we live today, what pre-historic period gives us the ability to heat our homes, run our cars and have a comfortable life Group of answer choices Jurassic neogene carboniferous Cambrianarrow_forwardTable 10: Some Important Events in Geologic Time Era offspr Period Triassic Epoch Event Age of Reptiles begins Beginning of the Age of Mammals Eon Phanerozoic Mesozoic Early humans first appear Eukaryotes first appear First living things appear Fish with bony skeletons first аppear Formation of Pangaea Formation of present-day continents Land plants first appear Modern humans first appeararrow_forwardThe Precambrian is characterized by several major evolutionary milestones. Which of the following is a significant event that occurred during this time? The diversification of flowering plants The first appearance of dinosaurs The first appearance of photosynthetic organisms A mass extinction caused by a meteorite impact.arrow_forward
- After the Great Dying, we enter the Era which covers the evolutionary history of the dinosaurs up until they go extinct. Cambrian O Mesozoic Paleozoic O Cenozoicarrow_forwardThe “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 Eraarrow_forwardplease see attachedarrow_forward
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