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WorksheetsCambridge Checkpoint Science 9: Living Things In Their Environment
Total questions: 46
Worksheet time: 46mins
A food chain is a diagram that shows:
the realistic feeding relationships between all organisms in a community
how a particular food type is produced
the transfer of energy from one organism to another
how all the fast food restaurants in a food court belong to one owner
A food web is a diagram that shows:
the realistic feeding relationships between all organisms in a community
how a particular food type is produced
the transfer of energy from one organism to another
how all the fast food restaurants in a food court belong to one owner
The place where a plant or animal lives is known as a:
habitat
community
ecosystem
niche
The plants and animals that co-exist together in a particular area, collectively are known as a:
habitat
community
ecosystem
niche
The plants and animals together with the particular area they exist in, collectively is known as:
a habitat
a community
an ecosystem
a niche
The particular place or role that an organism has in an ecosystem is known as :
a habitat
a community
a niche
the environment
Organisms that are adapted to live in water are known as:
waterproof
aquatic
waterlogged
amphibious
The plant shown has adapted to it's environment using which two of the following possibilities?
growing spines which deter thirsty animals from eating it
growing thin, strong needles that prevent water loss
having a swollen stem, which stores water
having a tall, narrow shape with sloping branches so that precipitation falls off it.
The plant shown has adapted to it's environment using which two of the following possibilities?
growing spines which deter thirsty animals from eating it
growing thin, strong needles that prevent water loss
having swollen branches, which stores water
having a tall, narrow shape with sloping branches so that precipitation falls off it.
Plants which have developed deep/spreading roots, which can draw water from a wide area, are adapted to survive in:
the desert
the Arctic
a rainforest
an urban environment
Plants which do all their growing in the summer, are adapted to survive in:
the desert
the Arctic
a rainforest
an urban environment
Plants which have seeds that germinate high up in trees, but send roots that grow downward, are adapted to survive in:
the desert
the Arctic
a rainforest
an urban environment
Plants that germinate, grow, produce seeds, then die in less than a year, are known as:
weeds
annuals
perennials
deciduous
The three adaptations that plants and animals have, that help them adapt to their environment are:
structural/physical
psychological
behavioural
physiological
Three reasons that plants and animals adapt to their environment are for:
survival
growth
defense
longevity
reproduction
The ability to survive without water for long periods of time is a:
structural adaptation
behavioural adaptation
physiological adaptation
The ability for an animal to feed mostly at night is a:
structural adaptation
behavioural adaptation
physiological adaptation
Having a smooth, streamlined body to help move easily through water is what type of animal adaptation?
Structural
Behavioural
Physiological
Having sharp teeth to kill prey is what type of animal adaptation?
Structural
Behavioural
Physiological
Having the ability to lower metabolic rate to prevent water loss in dry conditions is what type of animal adaptation?
Structural
Behavioural
Physiological
The following are a list of steps when carrying out an ecological investigation, using a quadrat:
1-Calculate/estimate the population of the given species using your results
2-Repeat placing the quadrat in other randomly selected places counting the species number each time
3-Calculate/estimate the area of land under study
4-Count the number of a given species in the quadrat
5-Randomly decide where to place the quadrat
6-Measure the area of the quadrat
A possible correct step order is:
1 - 2 - 3 - 4 - 5 - 6
6 - 5 - 4 - 3 - 2 - 1
6 - 5 - 4 -2 - 1 - 3
6 - 5 - 4 - 2 - 3 - 1
One correct way to estimate the number of a particular species from a quadrat study is:
(area of quadrat/area of land) * (ave. number of particular species in one quadrat)
(area of land/area of quadrat) * (ave. number of particular species in one quadrat)
(ave. number of particular species in one quadrat/area of land) * (area of quadrat)
(area of quadrat/ave.umber of particular species in one quadrat/) * (area of land)
One way to estimate the total number of a particular species using a quadrat study is:
(estimated area of land/total area of all quadrats) * count in all quadrats
(total area of all quadrats/total count in all quadrats) * estimated area of land
(total area of all quadrats/estimated area of land) * total count in all quadrats
(estimated area of land area of all quadrats/total count in all quadrats) * total area of all quadrats
The directions of the arrows in a food web point away from the
primary consumer to top predator
top predator to primary consumer
producer to top predator
top predator to producer
A primary consumer is always a
carnivore
herbivore
top predator
An "energy pyramid" has __________ at the top, and ________ at the bottom.
producers, primary consumers
primary consumers, producers
tertiary consumers, producers
producers, tertiary consumers
The amount of energy available at each higher level of an energy pyramid is:
1% of the previous level
10% of the previous level
50% of the previous level
90% of the previous level
The amount of energy used up at each level of an energy pyramid is:
1% of the available energy
10% of the available energy
50% of the available energy
90% of the available energy
What do all dead organisms and the waste material produced by living organisms contain?
bacteria
enzymes
organic matter
zombies
What are "decomposers"
organisms that get their energy by breaking down dead bodies and organic waste
organisms that use energy to break down dead bodies and organic waste
dead bodies and organic waste
germs and enzymes
What do decomposers produce that help with digestion?
faeces
waste material
teeth
enzymes
When fungus breaks down bread, it produces "hyphae". Hyphae are:
the green mouldy appearance seen on the bread
live maggots that roam through the bread
thin thread-like "roots' that grow throughout the bread
enzymes
Enzymes are necessary in digestion as they
break down larger molecules into smaller molecules
produce larger molecules from smaller molecules
prevent us from bacteria
move food through the digestive system
Select all that apply:
Fungi DIFFER in the way they feed compared to humans as they:
feed on starch and protein and humans do not.
produce enzymes to help with digestion, and humans do not
grow through it's food, whereas humans do not
digest food outside it's body and humans do not
Select all that apply:
Decomposers
are organisms that get their food from dead organisms and organic waste
deconstruct symphonies
are organic waste material and dead organisms
help to recycle substances from dead organisms and waste, so that other living organisms can use them
include maggots, fungi, worms, fruit flies
Under what circumstances do populations increase?
When the number of births is less than the number of deaths
When the number of births is equal to the number of deaths
When the number of births is greater than the number of deaths
Under what circumstances do populations decrease?
When the number of births is less than the number of deaths
When the number of births is equal to the number of deaths
When the number of births is greater than the number of deaths
A "population" is
all the people living in the same area at the same time
all the organisms of one species living in the same area over time
all the organisms of one species living in the same area at the same time
all the organisms of all species living in the same area at the same time
Select all that apply:
The factors that could be responsible for animal population growth are:
an increase in predator numbers
a decrease in predator numbers
an increase in the food supply
a decrease in the food supply
disease
Select all that apply:
The factors that could be responsible for animal population decline are:
an increase in predator numbers
a decrease in predator numbers
an increase in the food supply
a decrease in the food supply
disease
Select all that apply:
The factors that could be responsible for plant population size are:
the amount of available water
the amount of oxygen present
the amount of light
the amount of grazing herbivores
the number of decomposers available
Pollution is:
material that cannot decompose
what occurs when the number of decomposers were to decrease
harmful substances that exist in our environment
the addition of harmful substances to the environment
An "algal bloom" on a lake surface is caused by:
the addition of extra plants and algae to the lake
the addition of extra fertilizer to the lake, causing plants and algae to grow
a lack of oxygen in the lake water
dead and decaying fish and other organic matter in the lake
Select all that apply:
Pollution affects food webs by
removing one (or more) links in a food web
changing the habitat of the ecosystem, therefore affecting food chains
possibly adding a poison into the food web
always increasing the number of producers, and decreasing the number of consumers
always increasing the number of consumers, therefore decreasing the number of producers
The following are the effects of fertilizer pollution in water:
1-Plants die
2-Death of fish
3-Increased growth of water plants and algae
4-Fertilizer added to lake
5-Increase in decomposers
The order of the process in turning a healthy lake to an unhealthy lake would be:
1 - 2 - 3 - 4 - 5
2 - 3 - 4 - 1 - 5
4 - 2 - 3 - 1 - 5
4 - 3 - 1 - 5 - 2
4 - 3 - 5 - 1 - 2
Select all that apply:
"Algal blooms" affect a lake ecosystem by:
directly preventing oxygen reaching underwater plants
producing toxins that could poison fish and other aquatic creatures
adding extra fertilizer to the lake
preventing sunlight getting deep into the lake
increasing the number of decomposers, which use up most of the dissolved oxygen in the water
