eco-systems Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

what does the term habitat mean

A

where plants/animals live

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

what does the term population mean

A

a group of organisms of one sepecies living in a habitat

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

what does the term community mean

A

populations of different species living in a habitat

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

what does the term ecosytem mean

A

the interaction of a community of a living organisms and abiotic factors

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

what do plants compete for

A
  • light
  • space
  • mineral ions
  • water
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what do animals compete for

A
  • food
  • water
  • territory
  • mates
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

whats intraspecific competion

A

competion between 2 individuals of the same species

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

whats interspecific competion

A

competion between 2 individuals of different species

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

what are abiotic factors?
what are biotic factors?

A

ABIOTIC - non living factors in an ecosystem
BIOTIC - living factors in an ecosystem

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

give examples of abiotic factors

A
  • light intensity
  • temperature
  • water
  • soil & mineral content
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

give examples of biotic factors which affect communitys

A
  • new predators
  • new pathogens
  • ## avialbilty for food
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what can a change in abiotic/biotic factor lead to?

A

lead to an inc/dec in the size of population or community.

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

what are trophic levels

A

feeding stages within a food chain

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

level 1 = plants and algae
what are producers?

A

organisms that make their own food - from sunlight

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

level 2 = herbivores
what are primary producers?

A

only eat plats/alage etc

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

level 3 = carnivores
what are secondary producers?

A

eat herbivores

17
Q

level 4 = carnivores
what are tertiary consumers?

A

eat other carnivores

18
Q

level 5 = carnivores
what are apex predators?

A

have no other predators

19
Q

what is biomass?

A

mass of organic material that makes up a living organism

20
Q

what is lost as you go up a food chain/trophic levels?
meaning the higher you go up..

A
  • loss of energy
  • there is less energy / les biomass
21
Q

name 3 things that cause a loss in biomass:

A
  • absorbed material is lost as waste e.g water, urea
  • not all material is absorbed
  • LARGE amount of glucose are used in repsiration
22
Q

what is a food web

A

a network of food chains showing the relationship/links between organisms

23
Q

what is interdependence?

A

within a community each species depend on each other to survive

24
Q

explain the interpendence between predators and prey?

A

if the population of prey increases the preadators increases & prey decreases = predator decrease

25
Q

give 3 adaptations an organism may need to do:

A
  • structual e.g body colour
  • behavioural e.g migration
  • functional e.g internal changes
26
Q

give 3 extreme enviroments:

A
  • high temps
  • high pressure
  • high salt concentration
27
Q

what are organims living in extreme enviroments called?

A

extremophiles