which are the following are examples of fossils n.
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Which are the following are examples of fossils? - PowerPoint PPT Presentation


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Which are the following are examples of fossils? . Shells or old bones Any traces of dead organisms Insects trapped in tree sap . Animal fossils may form when. An animal is buried by sediment An animal is buried on the ocean floor, in swamps, in mud, or in tar pits.

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which are the following are examples of fossils
Which are the following are examples of fossils?
  • Shells or old bones
  • Any traces of dead organisms
  • Insects trapped in tree sap
animal fossils may form when
Animal fossils may form when
  • An animal is buried by sediment
  • An animal is buried on the ocean floor, in swamps, in mud, or in tar pits.
  • An animal’s tissues is replaced by harder minerals
darwin drew ideas for his theory from observations of organisms on
Darwin drew ideas for his theory from observations of organisms on:
  • The Galapagos Islands
  • The Samoan Islands
  • Manhattan Island
  • The Hawaiian Islands
slide4
The species of finches that Darwin observed differed in the shape of their beaks. According to Darwin, all of these species probably
  • Had a common ancestor.
  • Had migrated from Africa
  • Had descended from similar birds in Africa
  • Ate the same diet
slide5
Darwin thought that the animals of the Galapogos Islands were similar to those of the nearby coast of South America because.
  • The animals ancestors had migrated from South America to the Galapagos Islands
the process by which a population becomes better suited to its environments
The process by which a population becomes better suited to its environments
  • Adaptation
  • Accomadation
  • Variation
  • Acclimation
according to darwin evolution occurs
According to Darwin, evolution occurs
  • Because of natural selection
  • Only through artificial selection
  • During half-life periods of 5,715 years
  • So rapidly that it can be observed
when darwin published his first book about evolution he included all of the following ideas except
When Darwin published his first book about evolution, he included all of the following ideas except
  • The idea that species are permanent and unchanging.
the major ideas that darwin presented in his book the origin of species was that
The major ideas that Darwin presented in his book The Origin of Species was that
  • Species change over time by natural selection
natural selection could not occur without
Natural selection could not occur without
  • Genetic variation in species
populations of the same species living in different places
Populations of the same species living in different places
  • Become increasingly different as each population becomes adapted to its own environment.
natural selection could not occur without1
Natural Selection could not occur without
  • Genetic variations in species
scarcity of resources and a growing population are most likely to result in
Scarcity of resources and a growing population are most likely to result in
  • Increased competition
  • Convergent evolution
  • Decreased homology
  • Increased genetic variation
since natural resources are limited all organisms
Since natural resources are limited, all organisms
  • Must compete for resources
  • Must migrate to new habitats
  • Display vestigial structures
  • Have inherited characteristics
homologous structures in organisms provide evidence
Homologous structures in organisms provide evidence
  • Share a common ancestor
  • Must have lived at different times
  • Have a skeletal structure
  • Are now extinct
slide16

Anatomical structures that appear to be derived from a functional structure in an ancestor, but that currently do not serve an important function, are called

  • Inorganic
  • Mutated
  • Vestigial
  • Fossilized
slide17
The beak of a bird and the beak of a giant squid evolved independently and serve the same function. The beaks are
  • Divergent structures
  • Homologous structures
  • Analogous structures
  • Hybrid sturctures
the occurrence of the same blood protein in a group of species provides evidence that these species
The occurrence of the same blood protein in a group of species provides evidence that these species
  • Evolved in the same habitat
  • Evolved in different habitat
  • Descended from a common ancestor
  • Descended from a different ancestor
evidence that evolution occurs includes all of the following except
Evidence that evolution occurs includes all of the following except
  • Acquired characteristics
  • Similarities and differences in proteins and DNA sequences between organisms
  • The fossil record
  • homologous
the modern synthesis of evolutionary theory predicts that
The modern synthesis of evolutionary theory predicts that
  • Closely related species will show similarities in DNA sequences
  • If species have changed over time, their genes should have changed
  • Closely related species will show similarities in amino acid sequences
the accumulation of differences between populations that once formed a single population is called
The accumulation of differences between populations that once formed a single population is called
  • Coevolution
  • Adaptation
  • Divergent evolution
  • Cumulative differentiation
slide22
The process in which two or more species become more adapted over time to each other’s presence is called
  • Divergence
  • Radiation
  • Coevolution
  • Competition
over millions of years plants and their pollinators have
Over millions of years, plants and their pollinators have
  • Coevolved
  • Crossbred
  • Become parasites
  • Become competitive
slide24

While the shark and dolphin are similar in appearance, dolphins evolved from ancestors that were very different from sharks. The current similaritiy between sharks and dolphins is an

  • Coevolution
  • Biogeography
  • Convergent evolution
  • Divergent evolution
slide25

A biologist analyzes the DNA sequences in three different primates. The biologist finds that primates A and B have nearly identical DNA sequences. The DNA sequences in primate C are significantly different from those of primate A. From this information, the biologist may infer that

  • Primates A and B are more closely related to each other than either is to primate C.
slide26

What is the idea developed by Charles Lyell which states that the geologic processes that shaped Earth in the past continue to operate in the same way today?

  • Inheritance of acquired characteristics
  • Catastrophism
  • Uniformitarianism
  • Descent with modification
artificial selection has been used by humans to
Artificial selection has been used by humans to
  • Speed up the process of divergent evolution
slide32

The process by which organisms with traits well suited to an environment survive and reproduce more successfully than organisms less suited for that environment is called

  • Natural Selection
according to darwin the limits the rate at which organisms survive and reproduce
According to Darwin, the _____ limits the rate at which organisms survive and reproduce
  • environment
closely related species show more in nucleotides sequences than distantly related species
Closely related species show more____ in nucleotides sequences than distantly related species
  • similarities