B4-Community-level Systems

Question 1

Ecosystem

Answer 1

All of the living and non living things that interact in an area

Question 2

Habitat

Answer 2

The place where an organism lives

Question 3

Population

Answer 3

All the organisms of one species in a habitat

Question 4

Community

Answer 4

All of the plant and animal species that live in a habitat

Question 5

Producer

Answer 5

An organism that makes its own food by photosynthesis

Question 6

Consumer

Answer 6

An organism that eats other organisms

Question 7

Trophic level

Answer 7

The levels in a food chain

Question 8

Carnivore

Answer 8

An animal that only eats other animals

Question 9

Herbivore

Answer 9

An organism that eats only plants

Question 10

Omnivore

Answer 10

An organisms that eats both plants and animals

Question 11

Predator

Answer 11

An organism that kills and eats other organisms for food

Question 12

Prey

Answer 12

An organism that is killed and eaten by another organism

Question 13

Biomass

Answer 13

The mass of living organisms

Question 14

Decomposer

Answer 14

A microorganism that feeds on dead or decaying material

Question 15

Detritivore

Answer 15

A small animal that feeds on dead or decaying material

Question 16

Saprophyte

Answer 16

Organisms that feed on dead or decaying material

Question 17

Abiotic factors

Answer 17

The non living conditions in an ecosystem e.g. temperature or rainfall

Question 18

Biotic factors

Answer 18

The living conditions in an ecosystem e.g. the number of predators or prey

Question 19

Interdependence

Answer 19

How different organisms depend on each other within a community

Question 20

Interspecific competition

Answer 20

Competition between members of different species

Question 21

Intraspecific competition

Answer 21

Competition between members of the same species

Question 22

Biomass transfer formula?

Answer 22

Biomass available after
————————————— X 100
Biomass available before

Question 23

What do plants need to survive?

Answer 23

Light
Water
Minerals

Question 24

What do animals need to survive?

Answer 24

Food
Water
Oxygen
Breeding partners

Question 25

Mutualism

Answer 25

Where both organisms benefit from the relationship

Question 26

Parasitism

Answer 26

Where one side benefits (the parasite)

Question 27

Predation

Answer 27

The relationship between a predator and its prey

Question 28

What materials are cycled?

Answer 28

Water
Carbon
Nitrogen

Question 29

How is carbon removed from the atmosphere?

Answer 29

Combustion and photosynthesis

Question 30

How is carbon released into the atmosphere?

Answer 30

Respiration, decomposition and the burning of fossil fuels

Question 31

How are nutrients released by decomposers?

Answer 31

They release enzymes, these then absorb soluble nutrients to use for energy store and growth

Question 32

What is egestion?

Answer 32

Removal of undigested waste from an organism

Question 33

Excretion

Answer 33

Removal of waste products from an organism

Question 34

What is the Carbon cycle?

Answer 34

The process through which carbon is cycled through the atmosphere, the Earth, plants and animals