Bio 20 Unit 2 - Part 3, Ecology *FINAL* Flashcards Preview

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Flashcards in Bio 20 Unit 2 - Part 3, Ecology *FINAL* Deck (35):
1

Define community

A group of different species living together in a specific area.

2

Define ecosystem

The interactions between a community of organisms and they non-living environment.

3

Define symbiosis

Relationships between different organisms in which they rely on each other in some way for survival.

4

What are the five types of symbiosis?

Predation
Parasitism
Mutualism
Commensalism
Competition

5

Define predation

The predator consumes the prey

6

Define parasitism

The parasites live in or on the host. The host provides the food for the parasite. The parasite usually does not kill the host.

7

Define mutualism

Both organisms benefit from the relationship.

8

Define commensalism

One organism benefits and the other organism is not affected.

9

Define competition

When organisms compete for the necessities of life, such as food, water mates, sunlight, etc.

10

What are the two types of competition?

Intraspecific and interspecific.

11

What is intraspecific competition?

Competition between organisms of the same species.

12

What is interspecific competition?

Competition between organisms of different species.

13

Define habitat

Where an organism lives in an ecosystem (location).

14

Define niche

The way in which an organism interacts with the ecosystem (role/job).

15

Define ecotone

The boundary between different communities.

16

Define diversity

The number of different species in an area.

17

The greater the diversity, the more _______ the ecosystem.

stable

18

Define succession

When the community of organisms changes over time.

19

What is primary succession?

When a community begins where no community existed before.

20

What is secondary succession?

When a community re-grows after it has been destroyed (from fire, tornado, hurricane, tsunami, avalanche, etc..)

21

Define biomes

A large region of the world with a unique climate and distinct plants and animals.

22

What factors contribute to the climate if a region?

Latitude, location on a continent, local land forms

23

Define latitude

Distance north/south of the equator

24

What are the 3 main zones of the Earth according to the latitude?

Tropical (0-23 degrees N or S of the equator.)
Temperate (23.5 - 66.5 degrees N or S)
Polar (66.5-90 degrees N or S)

25

How is location on a continent a factor to the climate of a region?

Further inland, the less rainfall and yearly temperatures have a greater change.

26

The climate of an area determines the types of _____, and the _____ determine the types of _____. All three combine to form a _____.

plants, plants, animals

27

flora

plant life

28

fauna

animal life

29

What are the 7 major types of biomes?

-Tropical Rainforest
-Deciduous forest
-Coniferous Forest
-Savanna
-Desert
-Tundra
-Grassland

30

What are the 5 main zones of the ocean?

Intertidal
Neritic
Photic
Aphotic
Benthuc

31

What is the intertidal zone?

Along the shore, covered by water for only part of the day.

32

What is the neritic zone?

Continental shelf
Shallow coastal area,
0-200 km from shore
most life forms because light fills the zone.
0-100 m in depth
-coral reefs

33

What is the photic zone?

-top 200m of the deep ocean
-many life forms because light penetrates area

34

What is the aphasic zone?

-below 200m of deep ocean
-few life forms because of lack of light

35

What is the benthic zone?

-deep ocean bottom
-no light
-life forms feed on dead life that sank or chemicals from volcanic vents (chemosynthesis)