Life processes in the biosphere Flashcards

1
Q

Abiotic factor

A

Non-living

e.g wind, light intensity, pH, nutrient availablity

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

Biome

A

A large naturally occurring community of flora and fauna

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

Biotic factor

A

Living

E.g plants, animals, invertebrate

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

Carrying Capacity

A

The number of organisms which a region can support without environmental degradation

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

Climax community

A

Final stage of ecological succession

Stable community

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

Community of species

A

Group or association of populations of 2+ different species occupying the same area at the same time

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

Deflected succession

A

A community that is only stable due to human influence that stops the local ecosystem reaching a stable climax community

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

Density dependant factor

A

Population growth rates are regulated by population density

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

Ecological niche

A

The position of a species within an ecosystem describing both the range of conditions necessary for persistence and its ecological rate

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

Ecosystem

A

Consists of all the organisms and the physical environment with which they interact

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

Hydrosere

A

Plant succession which occurs in an area of freshwater

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

Inter-species-relationship

A

Interaction between different species

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

k-selection

A

Theory that combinations of traits in an organism that trade of between quantity and quality of offspring

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

Lithosere

A

Plant succession which begins life on newly exposed rock surface

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

Pioneer Species

A

The first species to colonise barren environments

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

Plagioclimax

A

An altered or reduced climax of a plant ecosystem caused by human activity

17
Q

Population

A

All inhabitants of a particular place

18
Q

Primary succession

A

Begins in barren areas

First set of organisms

19
Q

Range of Tolerance

A

The upper most and lower range of an abiotic factor that an organism that can survive

20
Q

R-selection

A

A form of selection that occurs in an environment with plentiful resources

21
Q

Secondary succession

A

Second wave of organisms that colonise a barren area

22
Q

Species

A

Classification and taxonomic rank of an organism

23
Q

Symbiosis

A

Several living organisms working together in an arrangement

24
Q

Taxon

A

A taxonomic group

25
List some abiotic factors
``` Examples - Water availability Temperature fluctuations Turbulence Nutrient levels Light levels ```
26
List some biotic factors
Food Shelter Reproduction
27
Why is it good to have a wide range of tolerance?
Fluctuating environmental changes push less tolerant species out and their populations decline.
28
How do detritivores and decomposers work together?
Detritivores - animals that eat dead organisms that they didn't kill Decomposers - Release enzymes to breakdown that matter and then consume it
29
What is parasitism?
A relationship where one species benefits at the expense of another e.g - tapeworms, ticks, leeches
30
What is symbiosis?
A relationship where both species benefit. e.g hippos and barbell fish alligators and birds
31
What is pollination/seed dispersal? (sexual/asexual reproduction)
Pollination - male and female sex cells in plants enabled to meet due to being carried by organisms, e.g bees Seed dispersal - transported to a new suitable location either benefits the animal too, e.g sqirrels, wind, feces
32
What is habitat provisions/modifying abiotic factors?
Some species may modify the habitat and abiotic factors in a way that suits the development of a new species e.g plants release oxygen
33
What are feeding relationships?
The relationship between organisms eating and being eaten (and the knock effect this may have predator prey consumer