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science > science vocab > Flashcards

science vocab Flashcards

memory purposes

1
Q

A close relationship between two different organisms living together.

A

Symbiotic Relationship

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2
Q

A relationship in which both species benefit.

A

Mutualism

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3
Q

A relationship between a parasite and it’s host.

A

Parasitism

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4
Q

A relationship where one species benefits without benefiting or harming the other species.

A

Commensalism

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5
Q

A relationship in which one animal hunts, kills, and eats another.

A

Predation

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6
Q

This occurs when organisms in an ecosystem try to get the same resources.

A

Competition

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7
Q

Organisms that produce their own food.

A

Producers

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8
Q

Organisms that get their energy from consuming other organisms.

A

Consumers

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9
Q

Organisms that break down remains of dead organisms for energy.

A

Decomposers

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10
Q

How an organism acts in its ecosystem.

A

Niche

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11
Q

Organisms that live in the same habitat but rely on different resources.

A

Co-Existence

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12
Q

A group of organisms of the same species that live in a specific area.

A

Population

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13
Q

The variety of life.

A

Bio-Diversity

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14
Q

A community of biotic and abiotic factors interacting.

A

Ecosystem

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15
Q

An interacting group of various species in a common location, like a forest.

A

Community

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16
Q

The region of earth that encompasses all living organisms.

A

Bio-Sphere

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17
Q

Non-living parts of an ecosystem.

A

Abiotic Factor

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18
Q

Living parts of an ecosystem.

A

Biotic Factor

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19
Q

Anything that constrains a populations size and slows or stops it from growing.

A

Limiting Factor

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20
Q

The average number of organisms that can inhabit a given unit area or volume.

A

Population Density

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21
Q

The number of organisms that an ecosystem can sustainably support.

A

Carrying Capacity

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22
Q

A network of interconnected food chains in an ecosystem.

A

Food web

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23
Q

Each feeding level in an ecosystem.

A

Trophic Level

24
Q

Graphical representation of the trophic levels (nutritional) by which the incoming solar energy is transferred into an ecosystem.

A

Energy Pyramid

25
Q

An organism that produces it’s own food.

A

Autotrophs

26
Q

Organisms that cannot produce their own food.

A

Heterotrophs

27
Q

This ecosystem is found on land.

A

Terrestrial Ecosystem

28
Q

This ecosystem includes wherever there is salt water.

A

Aquatic Ecosystem

29
Q

The movement of nitrogen through the environment.

A

Nitrogen Cycle

30
Q

Carbon moves among the air; the ground and the plants / animals.

A

Carbon Cycle

31
Q

Science that deals with the physical history of the earth and the changes it is and has undergone.

A

Geological Evolution

32
Q

A theory that states the Earth’s crust is made up of a number of plates that move

A

Theory of Tectonic Plates

33
Q

How biologists group organisms, rooted in by Aristotle

A

Biological Classification

34
Q

The study of similarities and differences of the body structures of different species to determine their ancestry or relationship

A

Comparative Anatomy

35
Q

An organism that shares similar traits from two different previous generations or ancestors

A

Common ancestor

36
Q

Structures that have different mature forms but develop from the same embryonic tissue

A

Homologous structures

37
Q

Structures in different species that has similar appearance of function but have evolved separately thus do not share a common ancestor

A

Analogous structures

38
Q

Remnants of structures that were once functional in ancestor, (now reduced in size and have little or no function)

A

Vestigial structures

39
Q

A branch of biology that early life stages and their development

A

Embryology

40
Q

When organisms change over time, so modern organisms descended from ancient ones

A

Theory of evolution

41
Q

Any genetic change in a population that is inherited over several generations

A

Biological evolution

42
Q

Diversity in gene frequencies between individuals or populations

A

Genetic variation

43
Q

Randomly occur to produce variations

A

Genetic mutation

44
Q

The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment

A

Phenotype

45
Q

Intentional breeding of plants and animals to preserve traits that breeders want

A

Artificial Selection

46
Q

The variety of life in the world, or in a specific habitat or ecosystem

A

Biodiversity

47
Q

The process where organisms better adapted to their environment tend to survive longer and produce more offspring

A

Natural Selection

48
Q

The genetic contribution of an individual to the next generation’s gene pool

A

Biological Fitness

49
Q

Inherited traits that improve an organism’s chance of survival and reproduction in a certain environment

A

Adaptation

50
Q

Science that deals with the physical history of the Earth and the changes it is and has undergone

A

Geological Evolution

51
Q

A theory that states the Earth’s crust is made up of a number of plates which move over a liquid crust that get created and destroyed over time

A

Theory of plate tectonics

52
Q

Two hundred million years ago (Mya), research suggests that all the continents were one large mass

A

Pangea

53
Q

States that in undisturbed rock layers, the oldest rock is on the bottom and the youngest rock in on top

A

Law of Superposition

54
Q

Any fossil which gives us information about a transition from one species to another; helps support the Theory of Evolution

A

Transitional Fossil

55
Q

A remnant (part), impression, or trace of an animal or plant of a past geologic age that has been preserved (saved) in Earth’s crust

A

Fossil

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