WorksheetsOrganisation of the Ecosystem AQA GCSE
Total questions: 38
Worksheet time: 19mins
What are the living and nonliving things in an environment or area?
predator
producer
ecosystem
abiotic factor
An organism that can make its own food
decomposer
producer
consumer
Breaks down and feeds on the remains of other organisms
decomposer
consumer
producer
Interacting food chains found in an ecosystem
food web
food chain
predator
An animal that hunts and eats other animals for energy
prey
predator
decomposer
NON-living things found in an ecosystem
biotic
abiotc
habitat
LIVING things in an ecosystem
biotic
abiotic
ecosystem
What word do we use to describe the relationship between biotic and abiotic factors in an ecosystem?
Interdependent
Independent
Intradependent
Dependent
What do we call the washing out of nutrients from the soil by rainfall?
Leaching
Surface runoff
Weathering
Decomposition
What role do decomposers play in the nutrient cycle?
Break down litter and return nutrients to the soil
Take up nutrients from the soil through their roots
Cause leaf litter to fall from tree branches
How does using fertiliser impact pond ecosystems?
Nutrients from leaf litter is removed
Oxygen is removed due to algae growth
Soil is poisoned, preventing growth
What affects the Rate of Decay?
Temperature
Oxygen Availability
Water Availibility
Amount of Decomposers
Food Availability
What is Biodiversity?
Variety of Different species of Organisms on Earth or within an Ecosystem
How Organisms Adapt to their environment
Which of the following chemical reactions are parts of the Carbon Cycle?
respiration
photosynthesis
digestion
combustion
What is a measure of all the different species of organisms on Earth?
population
ecosystem
biodiversity
community
What would cause a population of a particular species to decrease?
plenty of food available
build up of wastes and toxins
birth rate increasing
plenty of land available
A high world population means less land available and the effect of this on biodiversity is...?
increases biodiversity
has no effect
animal and plant populations are destroyed
global warming
An increasing world population means more waste in our waters. Which of these pollute our waters?
landfill sites
sewage, fertilisers and pesticides
fish
gases from car's exhausts
What mineral in fertilisers and sewage leads to a rapid growth of algae in water which eventually leads to the death of other plants and animals?
nitrates
potassium
magnesium
sodium
Bloodworms, mayfly larvae and salmon can show whether water is polluted or not. What are they referred to as?
species
bioindicators
predators
consumers
If sulfur dioxide levels become too high, what effect can this have on some people?
causes acid rain
causes cancer
causes insomnia
causes serious breathing problems
Examples of biotic factors are....
soil pH
the temperature
predators
the light intensity
diseases
Examples of abiotic factors are....
soil pH
the temperature
predators
the light intensity
diseases
Animals compete for the following resources....
water, sunlight, oxygen and space
food, water, sunlight and a mate
a mate, food, space and water
space, a mate, water and sunlight
Plants compete for the following resources....
water, sunlight, oxygen and space
nutrients, water, sunlight and space
a mate, food, space and carbon dioxide
space, a mate, water and sunlight
Which adaptations of a cactus help it to conserve water? Tick all that apply
flat shape
leaves that are reduced to spines
swollen stems
green
Which of the following are adaptations of animals that live in a cold environment?
Thin fur
Small ears
A thick layer of subcutaneous fat
Large feet
Are often nocturnal
Which of the following are adaptations of animals that live in a hot environment?
Thin fur
Small ears
A thick layer of subcutaneous fat
Large feet
Are often nocturnal
Migrating is an example of a _____________ adaptation.
Structural
Functional
Behavioural
Hibernation is an example of a _____________ adaptation.
Structural
Functional
Behavioural
Colours for camouflage is an example of a _____________ adaptation.
Structural
Functional
Behavioural
Sweating is an example of a _____________ adaptation.
Structural
Functional
Behavioural
Organisms that have adapted to live in extreme environments are referred to as.......
extremophobes
mad
extremophiles
extremoverts
