Which of the following human activities has a positive effect on food webs?

Removing introduces species from an area

Scavengers are organisms which:

Organisms which feed on carrion, dead plant matter or refuse

an organism which breaks down dead or decaying matter

A population is defined as:

a group of the same species living in the same area

Which of the following human activities would have a negative impact on a natural environment?

Clearing forests and replacing with exotic species

Components of an ecosystem include:

all the biotic and abiotic factors in an area

Which statement best describes a trophic level?

the feeding position of an organism in a food web or chain

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Ecosystems

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A #ecosystem #revision

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Questions 20

Answers

1
The study of ecosystems and how living and non living things interact in an environment is:
Biology
Ecology
Chemistry
Meteorology
2
An example of a mutualistic relationship is:
Vulture and carcass
Shark and seal
Dog and a Tick
Sea anemone and clownfish
3
How do ecosystems receive energy?
dark matter
the sun
their parents
4
Producers are organisms which:
Eat other organisms
Produce their own food
5
Which of the following human activities has a positive effect on food webs?
Increasing fishing quotas of species
Opening an area of natural bushland for recreational purpose
Removing introduces species from an area
Introducing exotic species such as foxes and rabbits
6
Omnivores are organisms which eat:
Plants only
Air
Plants and Animals
Meat only
7
Scavengers are organisms which:
Organisms which feed on carrion, dead plant matter or refuse
Organism which hunt other organisms
Eat only producers
Eat live prey
8
A decomposer is:
an organism which breaks down dead or decaying matter
an organism which targets young prey
an organism who produces their own food
9
What is an abiotic factor?
Non living components
Living components
10
Herbivores are organisms which:
Do not need to eat
Only eat meat
Photosynthesise
Only eat plants
11
A population is defined as:
all the animals living in a particular community
all the biotic and abiotic factors of a community
all the plants living in a particular community
a group of the same species living in the same area
12
What percentage of energy is passed along trophic levels?
10%
50%
25%
90%
13
Which of the following human activities would have a negative impact on a natural environment?
Removing grazing cattle from natural woodland
Replanting native species in their native area
Clearing forests and replacing with exotic species
Reintroducing Koalas into eucalypt forests
14
The name given to an organism at the base of a food chain:
Carnivore
Producer
Omnivore
Consumer
15
The relationship between two organisms in which both benefit:
Competition
Mutualism
Commensalism
Parasitism
16
The struggle among organisms for resources is known as:
Competition
Mutualism
Grievance
Predation
17
Carnivores are organisms which:
don't need to eat to survive
eat meat
eat plants
eat plants and meat
18
Components of an ecosystem include:
Grass, trees, bees, ants
all the biotic and abiotic factors in an area
soil, sunlight, water
19
The habitat of an organism is:
the community where it lives
the environment where it lives
the place where it lives
the population among which it lives
20
Which statement best describes a trophic level?
the feeding position of an organism in a food web or chain
the niche of an organism in an ecosystem
the position of an organism in an ecosystem
the feeding role of an organism in an ecosystem

Ecosystems Flashcards | StudBud