Ch. 22 - Descent with Modification: A Darwinian View of Life Flashcards

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1
Q

Descent with modification

A

Evolution

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2
Q

The remains or traces of organisms from the past

A

Fossils

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3
Q

Superimposed layers of rock formed as new layers of sediment cover and compress older ones

A

Strata

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4
Q

The study of fossils

A

Paleontology

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5
Q

The theory that changes in the earth’s crust during geological history have resulted chiefly from sudden violent and unusual events

A

Catastrophism

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6
Q

The theory that changes in the earth’s crust during geological history have resulted from the action of continuous and uniform processes

A

Uniformitarianism

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7
Q

Inherited characteristics of organisms that enhance their survival and reproduction in specific environments

A

Adaptations

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8
Q

A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than do other individuals because of those traits

A

Natural selection

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9
Q

The process in which humans modify other species over many generations by selecting and breeding individuals that possess desired traits

A

Artificial selection

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10
Q

Similarity resulting from common ancestry

A

Homology

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11
Q

Variations on a structural theme that was present in a common ancestor

A

Homologous structures

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12
Q

Remnants of features that served a function in the organism’s ancestors

A

Vestigial structures

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13
Q

A diagram that reflects evolutionary relationships among groups of organisms

A

Evolutionary tree

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14
Q

The independent evolution of similar features in different lineages

A

Convergent evolution

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15
Q

Shared by species without common ancestors because of convergent evolution

A

Analogous

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16
Q

The scientific study of geographic distributions of species

A

Biogeography

17
Q

The ancient single continent on Earth about 250 million years ago

A

Pangaea

18
Q

Found nowhere else in the world

A

Endemic

19
Q

Define the following term:

Evolution

A

Descent with modification

20
Q

Define the following term:

Fossils

A

The remains or traces of organisms from the past

21
Q

Define the following term:

Strata

A

Superimposed layers of rock formed as new layers of sediment cover and compress older ones

22
Q

Define the following term:

Paleontology

A

The study of fossils

23
Q

Define the following term:

Catastrophism

A

The theory that changes in the earth’s crust during geological history have resulted chiefly from sudden violent and unusual events

24
Q

Define the following term:

Uniformitarianism

A

The theory that changes in the earth’s crust during geological history have resulted from the action of continuous and uniform processes

25
Q

Define the following term:

Adaptations

A

Inherited characteristics of organisms that enhance their survival and reproduction in specific environments

26
Q

Define the following term:

Natural selection

A

A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than do other individuals because of those traits

27
Q

Define the following term:

Artificial selection

A

The process in which humans modify other species over many generations by selecting and breeding individuals that possess desired traits

28
Q

Define the following term:

Homology

A

Similarity resulting from common ancestry

29
Q

Define the following term:

Homologous structures

A

Variations on a structural theme that was present in a common ancestor

30
Q

Define the following term:

Vestigial structures

A

Remnants of features that served a function in the organism’s ancestors

31
Q

Define the following term:

Evolutionary tree

A

A diagram that reflects evolutionary relationships among groups of organisms

32
Q

Define the following term:

Convergent evolution

A

The independent evolution of similar features in different lineages

33
Q

Define the following term:

Analogous

A

Shared by species without common ancestors because of convergent evolution

34
Q

Define the following term:

Biogeography

A

The scientific study of geographic distributions of species

35
Q

Define the following term:

Pangaea

A

The ancient single continent on Earth about 250 million years ago

36
Q

Define the following term:

Endemic

A

Found nowhere else in the world