Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 32, Problem 2IQ
Describe the three hypotheses for the rapid diversification of animal phyla during the Cambrian period.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
What caused the Cambrian explosion? Describe current hypotheses.
Why is animal evolution during the early Cambrian referred to as an “explosion”?
The Cambrian explosion is a conundrum: how can the long prior history of the phyla, revealed by molecular divergence, be reconciled with their absence, and then sudden appearance, in the fossil record?
Chapter 32 Solutions
Study Guide for Campbell Biology
Ch. 32 - a. What is a larva? b. How does a larva differ...Ch. 32 - Describe the three hypotheses for the rapid...Ch. 32 - Prob. 3IQCh. 32 - Prob. 4IQCh. 32 - Fill in the blanks in the following simplified...Ch. 32 - Prob. 1TYKCh. 32 - The process during which the germ layers are...Ch. 32 - Prob. 3TYKCh. 32 - Prob. 4TYKCh. 32 - Prob. 5TYK
Knowledge Booster
Learn more about
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
- Which of the following is not a hypothesis used to describe the sudden change in the diversity of lifeforms observed in the Cambrian Period? a. Increased continental drift creating greater terrestrial landmasses O b. Predator-prey arms race due to evolution of locomotion and development of exoskeletons O c. Evolution of the Hox genes which regulate complex body plans O d. Rising sea levels, increasing the volume of area species could occupy e. Continental flooding driving increased nutrient and mineral flux in the oceansarrow_forwardDescribe a reason for the hypothesis that the ancestor of eleuthero-zoan groups was a radial, sessile organism.arrow_forwardThe 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.arrow_forward
- Which of the following is true about the phylogeny of birds and reptiles. Question 35 options: a) Birds are more closely related to amphibians then they are to reptiles. b) Birds are a type of reptile, but are not related to dinosaurs. c) Birds and reptiles are the least related vertebrates. d) Birds are a type of reptile and are descended from a group of dinosaurs.arrow_forwardWhich of the following periods is the earliest during which animals may have appeared? a. Ordovician period b. Cambrian period c. Ediacaran period d. Cryogenian periodarrow_forwardDiscuss three hypotheses, explaining the rise of Cambrian diversity and the decline of Ediacaran diversity, which are associated with predator-prey interactions, atmospheric conditions, and genetic changes.arrow_forward
- the animal kingdom was divided into 5 main clades. Which clade has animals without true tissues Question 7 options: a) Cnidaria b) Porifera c) Bilateria d) Ctenophoraarrow_forwardExplain what significant events happened during the Five major extinction events between the late Cambrian until the late cretaceous period.arrow_forwardShade the geological time range for each fossilized organism, marking the time period where each fossil belongs to in a darker color (see example for fossil #2: Batostomella gracilis ): Fossil #7: Mucrospirifer thedfordensis Fossil #16: Cardioceras species Fossil #17: Dinosaur bone Fossil #21: Otodus species Fossil #23: Dentalium sexangulare Fossil #24: Physa humerosaarrow_forward
- Until recent discoveries suggested otherwise, animals existing before the Cambrian period were believed to be: a. small and ocean-dwelling b. small and nonmotile c. small and soft-bodied d. small and radially symmetrical or asymmetricalarrow_forwardIn what way was the evolution of eukaryotic cells linked to the increase in the oxygen concentration in the atmosphere that occurred during the Precambrian?arrow_forwardWhich of the following groups of early-diverging animals is comprised of two layers of cells that float around in the ocean? a. Cnidaria b. The sponges c. Ctenophores d. Placozoaarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
From Sea to Changing Sea | Early Life in the Oceans || Radcliffe Institute; Author: Harvard University;https://www.youtube.com/watch?v=Ac0TmDf5Feo;License: Standard youtube license