ecology Flashcards

1
Q

ecology

A

study of how organisms with eachother and environment

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

species

A

same type of animals that have sex

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

population

A

same group of organisms

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

community

A

a lot of different organisms

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

ecosystem

A

all living things and there enviornment;abiotic+biotic

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

biosphere

A

sphere that hosts all life

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

biotic factor

A

something that is or used to be alive

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

abioticfactor

A

something that is never alive

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

habitat

A

specific environment in which an organism lives

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

resource

A

anything an organism needs

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

how do populations grow

A

birth+immigration-deaths+emigration

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

population size

A

describes the number of individual organisms present in a given population at a given time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

population density

A

population of unit area

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

population distribution

A

random, uniform,clumped(most common)

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

age structure

A

number of organism of each age in a population

16
Q

age structure diagram

A

growing;triangle
stable;vertical
declining;more old than young

17
Q

sex ratio

A

distrubution of male and females

18
Q

survivorships curves

A

3 basic types

19
Q

immigration

A

is the arrival of individuals from outside a given area

20
Q

emigration

A

departure of organisms from a given area

21
Q

migration

A

seasonal movements

22
Q

exponential growth

A

when a population increase by a fixed percentage each year

23
Q

limiting factor

A

characteristics of the enivornment that limit population growth

24
logistic growth
populations initial exponential increase is slowed down and stopped by limiting factors
25
density dependent factor
stuff that is influenced by population density
26
density independent factor
limiting factors whose influence is not affected by population density
27
biotic potential
potential of reproduction