EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Textbook Question
Chapter 21, Problem 2U
Gaps in the fossil record
a. demonstrate our inability to date geological sediments.
b. are expected since the probability that any organism will fossilize is extremely low.
c. have not been filled in as new fossils have been discovered.
d. weaken the theory of evolution.
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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
The 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 other
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.
Chapter 21 Solutions
EBK BIOLOGY
Ch. 21 - Artificial selection is different from natural...Ch. 21 - Gaps in the fossil record a. demonstrate our...Ch. 21 - The evolution of modern horses (Equus) is best...Ch. 21 - Homologous structures a. are structures in two or...Ch. 21 - Convergent evolution a. is an example of...Ch. 21 - Prob. 6UCh. 21 - The possession of fine fur in 5-month human...Ch. 21 - In Darwins finches, a. occurrence of wet and dry...Ch. 21 - Prob. 2ACh. 21 - Convergent evolution is often seen among species...
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- This video refers to Denisovans as a “Ghost Lineage.” In fact, Denisovans don’t even have a formal scientific name. What is the physical evidence that anthropologists need to further define and understand the Denisovans? A. None of the above B. A Type Specimen (and more Denisovan fossils) C. Neanderthal DNA D. H. sapiens DNAarrow_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_forwardWhich of the following is a prediction that evolution makes about the fossil record? Group of answer choices A. fossils of all time periods should be completely different from modern organisms B. most recent fossils should be most similar to modern life C. cats should appear in all fossil layers as rulers of the earth D. oldest fossils should be most similar to modern lifearrow_forward
- All 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_forwardIf the replacment (out-of-Africa) model is correct, thena. human fossils in China after 100,000 years bp would not beexpected to resemble earlier fossils.b. human fossils in China after 100,000 years bp would beexpected to resemble earlier fossils.c. humans did not migrate out of Africa.d. Both b and c are correct.e. Both a and c are correct.arrow_forwardThe evidence supporting biological evolution includes A. all of the above B. patterns of embryological development C. sharing of charactoristics between organisms D. fossil recordarrow_forward
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- Given the sources of evidence, explain precisely how it supports evolution. B. Fossilarrow_forwarda. What did Darwin's travels reveal to him about the number and variety of living species? b. How did tortoises and birds differ among the islands of the Galapagos? c. What is evolution? Why is referred to as a theory? d. Darwin found fossils of many organisms that were different from any living species. How would this finding has affecting his understanding of lifes diversity?arrow_forwardfemur shown above are In humans, the pelvis and femur, or thigh bone, are involved in walking. In wh a. examples of fossils. b. vestigial structures. WITH Fossil A- Pelvis Femur c. acquired traits. d. examples of natural variation. a. vestigial structures b. analogous structures == Fossil B TERED VERS Fossil C 72 3 Which conclusion is best supported by the information in the diagram? a. Volcanic eruptions were common in the area. b. The area was once a marine environment. c. Organisms in the area reproduced frequently. d. Consumers once outnumbered producers in the area. 0. Structures that have similar functions in two organisms that have not evolv a common ancestral form are called c. adaptations d. homologous structure a. True 1. In natural selection, populations change but individuals do not.arrow_forward
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