WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
5th Edition
ISBN: 9781319487317
Author: PHELAN
Publisher: INTER MAC
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Chapter 12, Problem 8MC
Summary Introduction
Introduction:
About 65 million years ago, the dinosaurs were wiped out in a mass-extinction event.
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Which of the following statements about the fossil record is true?
a.
The fossil record is a complete accounting of life on earth
b.
The fossil record is unbiased in the fossils that are found
c.
The fossil record is evenly sampled across all of life's history on earth
d.
There are certain biases in the fossil record
Fossils 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.
One hypothesis for the Cambrian explosion was an increase in predator-prey relationships. It is thought that the resulting co-evolution of predator and prey may have been a factor in the rapid speciation of animals seen during this time. What findings in the fossil record would most support this?
Group of answer choices
a. increased incidence of larger-bodied animals
b. increased incidence of sessile animals
c. decreased incidence of animals with bilateral symmetry
d. increased incidence of animals with radial symmetry
e. increased incidence of shells, bony plates, spines, and/or claws
Chapter 12 Solutions
WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
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- Which of the following statements is NOT true regarding segmentation? a. Segmentation allows the evolution of redundant systems. b. Segmentation is a requirement for a closed circulatory system. c. Segmentation enhances locomotion. d. Segmentation represents an example of convergent evolutionarrow_forwardPlace these events in the history of life on Earth in the order that they occurred. a. accumulation of O2 in Earth’s atmosphere b. colonization of land by plants and fungi c. diversification of animals (Cambrian explosion) d. origin of eukaryotes e. origin of humans f. origin of multicellular organisms g. origin of prokaryotesarrow_forwardAll the following statements support the theory that similar organisms have a common ancestor except Select one: a. similar DNA patterns occur in closely related organisms b. organisms sharing a habitat tend to develop similar behaviours c. transitional fossils show links between groups of organisms d. groups of organisms display similar embryonic developmentarrow_forward
- During the ____ epoch, there were fewer ____ and more ____, a reversal in the relative representation of these forms during modern times. a. Eocene; omomyids; eosimiids b. Miocene; Old World monkeys; apes C. Miocene; apes; Old World monkeys d. Oligocene; apes; Old World monkeys e. Paleocene; New World monkeys; Old World monkeysarrow_forwardThe fossil record provides evidence for: A.When organisms lived on earth B. How some species have gone extinct C.How species evolved D. All of the abovearrow_forwardSeveral very distantly related species (e.g., bats, birds, insects) have evolved the capability of flight. The most recent common ancestor of insects and vertebrates likely lived over 500 million years ago and was flightless. This independent evolution of flight in multiple, distantly related taxa is an example of what evolutionary process/pattern? a. Evolutionary reversal b. Convergent evolution c. Speciation d. Synapomorphyarrow_forward
- Researchers have found fossils of Eocene horse species in Colorado. Deeper deposits contain smaller species, and more recent deposits contain larger species. How does this observation support the theory of evolution? A. It provides evidence that species change over time. B. It does not support the theory of evolution. C. It shows that all species are related to each other. D. It proves that environments have changed over time. E. It suggests that species are unchanging and of recent origin.arrow_forwardThe Theory of Evolution contends that species have changed through time and are related to one another through descent from a common ancestor. Which of the following prediction follow from the Theory of Evolution? A. The fossil record should contain intermediate forms between major taxonomic groups B. The oldest rock strata are much more likely to contain complex fossils than simple fossils. C. Fossils are always a representation of species that are currently alive (ie extant) even if they have not been detected yet as living on earth at the present time D. All species are unigue and originated independently from each otherarrow_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_forward
- 800 Proterozoic 700 600 541 Phanerozoic 485 Demospongiae Hemichordata Echinodermata Vertebrata Nemertea Brachiopoda Mollusca Annelida Bryozoa Priapulida Onychophora Arthropoda Cnidariaarrow_forwardWhich evolutionary pattern is represented by the similarities between these two organisms that live on separate continents? a.) coevolution b.) convergent evolution c.) directional evolution d.) divergent evolutionarrow_forwardWhat characteristic(s) of the fossil record make(s) it strong support of evolution? a) It has fossils of many species in it that are not found on earth today. b) It is has a complete record of every form of life ever existing c) Species appear in sediment layers in a consistent pattern d) All fossils are similar to living forms found in the same area as the fossils Group of answer choices A. b and d B. a and b C. c and d D. a and c E. b and carrow_forward
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