Chapter 7/8 Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Adaption

A

A charaitic that improves an individual’s ability to survive and reproduce in a particular environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Species

A

A group of organisms that are closely related and can mate to produce offspring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Evolution

A

The process in which inherited charaitics within a population change over generations such that new species sometimes arise

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Fossil

A

The trace or remains of an organisms that lived long ago, most commonly preserved in seminary rock

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Fossil record

A

A historical sequence of life indicated by fossils found in layers of the earths crust

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Trait

A

A genetically determined charaitics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Selective breeding

A

The human practice of breeding animals or plants that have certain desired traits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Natural selection

A

The process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do; a theory to explain the mechanism of evolution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Generation time

A

The period. Between the birth of one generation and the birth of the next generation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Speciation

A

The formation of new species as a result of evolution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Relative dating

A

Any method of determining whether an event of object is old or younger than other events or objects.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Absolute dating

A

Any method of measuring the age of an object or event in years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Geologic time scale

A

The standard method used to divide the earths long natural history into manageable parts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Extinct

A

Describes a species that has died or completely

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Plate tectonics

A

The theory to explain how large pieces of the earths outermost layer move

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Precambrian time

A

The period in the geologic time scale from the formation of the earth to the beginning of the Paleozoic era, from about 4.6 billion to 542 million years ago

17
Q

Paleozoic era

A

The geologic era that followed Precambrian time and that lasted from 542 million to 251 million years ago

18
Q

Mesozoic era

A

The geologic era that lasted from 251 million to 65.5 million years ago; also called the age of reptiles.

19
Q

Cenozoic era

A

The most recent geologic era, beginning 65 million years ago; called the age of mammals

20
Q

Primate

A

Maybe of mammal characterized by opposable thumbs and binocular vison

21
Q

Hominid

A

A type of primate characterized by bipedalism, relatively long lower limbs, and lack of a tail

22
Q

Homo spines

A

The species of hoodies that includes modern humans and their claim est ancestors and that first appeared about. 100,000 to 160,000 years ago