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EXAMS 7TH GRADE > Vocabulary on Ecosystems > Flashcards

Vocabulary on Ecosystems Flashcards

1
Q

Biosphere

A

The parts of Earth and the surronding atmosphere and the living things thats called Earths biosphere.

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2
Q

Ecosystem

A

A group of organisms that live in an area at one time and other non-living parts of the enviorment/habitat.

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3
Q

Enology

A

The study of all ecosystems and living things body in that specific area

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4
Q

Biotic Factors

A

The living things in an ecosystem.
(EX.Plants and animals)

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5
Q

Abiotic Factors

A

The non-living things in an ecosystem
(EX. soil,climate, or water)

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6
Q

Community

A

All the populations of diffrent species that live toghether in the same area at the same time.

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7
Q

Population

A

All organisms of the same species that live in the same area at the same time

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8
Q

Species

A

Is a group of organisms that have similar traits and are able to produce fertile offsprings

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9
Q

Biotic potential

A

The potential growth of a population if it could grow in perfect conditions with no limiting factors

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10
Q

Limiting factors

A

Its anything that restricts the size of a population
(EX. supplies,temputure, preadators,disease’s, and natural disasters such as floods)

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11
Q

Competetion

A

The demand for resources that are in short supply in a community.
(EX.Food,water, and shelter)

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12
Q

Threatened Species

A

A species with this lable is at risk but not yet endangered

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13
Q

Endangered Species

A

Species with this lable are at risk for exctinction.

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14
Q

Extinct Species

A

Species with this label have died out and have no living indivduals of their kind left.

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15
Q

Capture-mark and release method

A

The animals are captured and sedated (drugged so they can relax) then Radio collars are placed on the animals. Released in the wild where the colar tracks their movements and their actvites. (used for population sizes method)

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16
Q

Carrying Capacity

A

Its the largest number of indivudals of one species that an enviroment can support.
(EX. How many fish can the coral reef sustain)
A good word for the Carrying Capacity is the LIMIT of how much an enviroment can hold.

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17
Q

Population density

A

Is the size of a population
compared to the amount of space available.

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18
Q

Sample count method

A

Biologists can count the number of oak
trees in a specific area of the forest, e.g.
1km2. Then, you simply multiply the number of
oak trees in that area by the total area of
the forest.
(EX. You find 60 oak trees withing that 1km. If the total area of the forst is 20km you do 60x20 = 1200 oak tress)

19
Q

Overpopulation

A

Occurs when the size of a
population becomes larger than the carrying
capacity of its ecosystem.

20
Q

Atmosphere

A

The layer of gasses that surrond Earth

21
Q

Birthrate

A

Is the number of offspring produced over a givine time period.

22
Q

Deathrate

A

Is the number of individuals that die over the same time period.

23
Q

Migration

A

Is the instinctive seasonal movement of a population of organisms from one place to another.

24
Q

Expotential Growth

A

A population in ideal (perfect) conditons with unlimited resources. The larger a population gets the faster it starts to grow.

25
Q

Extinct

A

Population that decreases in size/numbers until they dissaper

26
Q

Threatended

A

A specice that is at risk but not yet an endagered specie

27
Q

Endangered

A

A specie that is at the risk of going/being extinct.

28
Q

Niche

A

Is what a species does in its habitat to survive.

29
Q

Producers

A

Are orgnaisms that get energy from the enviroment, such as sunlight, and make their own food.

30
Q

Consumer

A

Are organisms that get enegry by eating other orgnaisms.

31
Q

Herbivores

A

Are organisms that eat plants.

32
Q

Omnivorerse

A

Are organisms that eat both meat and plants

33
Q

Carnivores

A

Are organisms that eat only meat

34
Q

Detrivores

A

Are orgnaisms that get energy by feeding off dead orgnaisms.

35
Q

Food chain

A

Food chains show the flow of energy through a community

36
Q

Food Web

A

Food webs show many food chains in a community and how they overlap

37
Q

Predators

A

Are orgnaisms that hunt other animals down for food.

38
Q

Prey

A

Are the organisms that get hunted down for food/energy.

39
Q

Prey-Predator relationship

A

This relationship includes the predator feasting on the prey for energy.

40
Q

Cooperative realtionship

A

This is when a population or species work toghether for survival.

41
Q

Symbiosis relationship

A

This relationship is when two species are in a close, long-term relationship that usualy involves an exchange of food or energy.

42
Q

Mutalism

A

A symbiotic relationship in which both partners benfit from.

43
Q

Commensalism

A

A symbiotic relationship that benfits one species but does not harm or benfit the other.

EXAMS 7TH GRADE (6 decks)

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