WorksheetsGrade 7 Science Test: Interactions in the Environment
Total questions: 64
Worksheet time: 5hrs 44mins
Plants absorb light and frogs eat flies. These are examples of how organisms _____________
obtain energy
produce offspring
escape predators
excrete waste
A rabbit population increased from January to November. What environmental interaction may have caused this?
Decrease in resources
Increase in disease
Decrease in predators
Increase in pollution
An ecosystem is considered stable if it can meet the needs of the living things it supports.
True
False
Abiotic elements in an ecosystem are living things.
True
False
Consumers produce their own energy for others to eat.
True
False
What organism starts the flow of energy in a food web or food chain?
Tertiary producer
Primary consumer
Producer
Herbivore
Which of the following shows the flow of energy in an ecosystem?
Food chain
Organism path
The sun
Producers
Which of the following is responsible for returning nutrients to the soil?
Scavengers
Decomposers
Producers
Carnivores
Which of the following is an example of a decomposer?
Fungi
Buzzard
Hyena
Dandelion
Which of the following is a producer?
Sunlight
Algae
A pond
Snake
A wolf eats a snake. The snake eats a mouse. The mouse eats blueberries. What is the wolf in the Pyramid of Numbers?
Producer
Tertiary Consumer
Secondary Consumer
Primary Consumer
How does the energy availability change from one level to the next as you move up in an energy pyramid?
The energy stays the same as you move up the levels.
90% of the energy is passed on as you move up the levels.
10% of the energy is passed on as you move up the levels.
The energy increases as you move up the levels.
Primary succession occurs in an area that has:
Soil
No soil
Some soil
None of these
Which of the following is the correct order of ecological succession?
grass - shrubs - lichens - trees
lichens - shrubs - grasses - trees
lichens - grasses - shrubs - trees
grasses - lichens - shrubs - trees
What is the main difference between primary and secondary ecological succession?
Primary begins WITHOUT soil; Secondary begins WITH soil
Primary is the first state and secondary is the second stage
Primary builds plant community; secondary builds animal community
Primary begins WITH soil; Secondary begins WITHOUT soil
Biotic and abiotic elements in an ecosystem have a relationship with each other that is mutually beneficial. This relationship is also called a(n):
interaction
relationship
friendship
predator and prey relationship
The three roles of biotic elements in an ecosystem are:
predator, prey, consumer
producer, consumer, decomposer
mother, father, decomposer
none of the above
Define: Ecosystem.
The place where organisms live.
A community of organisms and their environment, including living and non-living things.
The environment of an area.
A model showing how energy moves through a food chain.
What is a predator?
An animal that hunts other animals.
An animal that is being hunted.
A model showing how energy moves through food.
An organism that decomposes organic material.
What is the best definition for the word prey?
An organism that lives in or on another organism
An animal that is hunted by another animal for food
A organism that uses energy from the sun to create its own food
An organism that decomposes organic material
Which definition best defines the word producer?
An organism that feeds on other organisms
An organism that decomposes organic material
An organism that uses energy from the sun to create its own food
An organism that eats plants
A consumer in an environment is _______________?
An organism that feeds on other organisms
An organism that gets its food from sunlight
An organism that decomposes organic material
An organism that eats plats
A decomposer can be defined as ___________________.
An organism that decomposes organic material (example: mushroom)
An organism that gets its food from sunlight
An organism that gets its food from other organisms
A organism that eats meat
An Energy Pyramid is ______________.
The cycle of how organisms feed
The pyramid of food groups
A model showing how energy moves through a food chain
A model of animals from strongest to weakest
A herbivore is ________________.
An organism that feeds on plants and meat
An organism that feeds on meat
An organism that feed on plants
An organism that gets its food from sunlight
A carnivore is important in an ecosystem because it is _____________________.
An organism that feeds on plants and meat
An organism that feeds on meat
An organism that feed on plants
An organism that gets its food from sunlight
Omnivores are good for ecosystems because they are ______________.
An organism that feeds on plants and meat
An organism that feeds on meat
An organism that feed on plants
An organism that gets its food from sunlight
In a Pyramid of Numbers or an Energy Pyramid, the most energy is located...
When both organisms in a symbiotic relationship benefit...
Parasitism
Mutualism
Symbiosis
Commensalism
Multiple members of the same species in a particular area
Organism
Population
Community
Ecosystem
All the populations in a given area
Organism
Ecosystem
Population
Community
All the populations in an area in addition to the nonliving components of that area
Population
Ecosystem
Community
Ecology
All living things ___________________.
grow
reproduce
heal and repair themselves
react to their environment
All living things ____________________.
produce waste
react to their environment
consume energy
All living things __________________________.
consume energy
sun bathe
grow
react to their environment
All living things ____________________________.
breathe
produce waste
are made of cells
react to their environment
All living things _____________________________.
react to their environment
fight snakes
grow
heal and repair themselves
All living things ____________________________.
have a lifespan
learn how to walk
consume energy
produce waste
All living things ___________________________.
can heal and repair themselves
produce waste
have patterns on them
are made of cells
All living things __________________________________.
can heal and repair themselves
are made of cells
produce waste
react to its environment
An individual living thing
Producer
Consumer
Organ
Organism
The surroundings or conditions in which a person, animal, or plant lives or operates.
Ecosystem
Population
Environment
Community
A series of steps in an ecosystem in which organisms transfer energy by eating and being eaten
Food chain
Food web
Pyramid of numbers
Pyramid of biomass
An ecological succession that begins in an area where no biotic community previously existed
Primary succession
Secondary succession
Succession following a disturbance that destroys a community without destroying the soil
Primary succession
Secondary succession
The ability to keep in existence or maintain, referring to ecosystems.
Homeostasis
Evolution
Conservation
Sustainability
Every time you buy a product, you should ask yourself this important question:
Am I wasting nature?
Is this product too expensive?
Is this product made in Canada?
Is this product recyclable?
"When viewed from above, the earth ceases to belong to us, but is shared by all living creatures. Everything is living and everything is linked." - Yann Arthus-Bertrand
What does Yann mean by this statement?
Yann means that all living things depend on each other for survival.
Yann means that humans do not need other animals for survival.
Yann means that the earth belongs to humans and we can use nature any way we like.
Yann means that we can see living things from high above the earth.
Why is it difficult for elephants and humans to coexist in Africa?
We share the same resources.
Elephants naturally hunt humans.
Elephants spread disease and viruses.
Elephants have taken much of the land that humans live on.
During the Carboniferous Period, fungi were the only major organisms that were able to break down or significantly modify ________ in trees.
lignin
bark
leaves
squirrels
A species that have lived in an area for a long time and have adapted to the other organisms in the ecosystem is called a(n) ______________.
native species
invasive species
endangered species
extinct species
Extinction occurs when a species no longer exists anywhere on Earth.
This statement is true.
This statement is false.
This statement is true some of the time.
A species that is in danger of becoming extinct is referred to as _______________.
an endangered species.
an extinct species.
a native species.
a thriving species.
Zebra mussels were introduced into the Great Lakes in the 1980s. Zebra Mussels are an example of _______________.
an invasive species.
an endangered species.
a native species.
a welcomed addition to the ecosystem.
A person who carefully manages a resource by taking responsibility for their actions and educating others is referred to as a ____________.
steward
consumer
recycler
landscaper
This is something we all need to work hard to reduce. It compares human demand on nature with the ability of Earth's ecosystems to regenerate those resources.
An ecological footprint
An environmental thumbprint
A natural replenishment
Sustainability
