WorksheetsEnergy Flow in Living Systems
Total questions: 41
Worksheet time: 24mins
Living things need food in order to grow and live. How do producers obtain their food?
They eat other producers.
They eat consumers.
They make their own food.
They eat both producers and consumers.
Which of the following organisms is NOT a consumer?
A herbivore
A mushroom
A rabbit
An apple tree
Which term below describes a connection of food chains with many energy paths?
food web
food chain
food pyramid
ecosystem
The source of all the energy in an ecosystem is
the ocean
the sun
the earth
the weather
Which of the following is NOT a producer?
Grass
Oak tree
Mushroom
Algae
Where do producers get their energy?
the sun
dead plants and animals
other animals
plants
Producers convert the sun's energy into food through
metamorphosis
photosynthesis
transpiration
the food chain
Which term describes a path of energy from one organism to another?
ecosystem
food chain
photosynthesis
food web
Which term describes an animal that hunts and feeds on another organism?
prey
herbivore
decomposer
predator
A food chain shows the flow of
food
organisms
energy
water
The energy of the sun is transferred through plants and given to
producers
consumers
clouds
soil
The process by which carbon dioxide and water are changed into oxygen and sugar using energy from the sun is
compaction
photosynthesis
erosion
metamorphosis
A connection of food chains with many energy food paths is
food web
food chain
ecosystem
photosynthesis
Plants MUST have this to create their own food-
Oxygen
nutrients
Sunlight
Soil
Producers are
Fungus
Animals
Plants
Bacteria
The arrows in a food chain or food web represent
the direction an organism moves
the size of the organisms
the direction of the flow of energy
the breakdown of dead organisms
Decomposers...
use sunlight to produce food
break down dead plants and animals for nutrients
get their energy from mushrooms
prey on small animals
Which of the following is a consumer?
snake
tree
pecan
cactus
When decomposers break down organic matter, the organic matter then...
gets energy from the sun
provides nutrients to plants
goes through photosynthesis
turns into mold
Carnivores eat...
plants and animals
only animals
only plants
plants, animals and decomposers
Omnivores eat...
plants and animals
only plants
only animals
plants, animals and decomposers
Herbivores eat...
plants and animals
only plants
only animals
plants, animals and dead organisms
In a food chain, the arrow points to the organism that...
is giving the energy
is getting the energy
is decomposing
is larger in size
Consumers may eat....
plants
herbivores
omnivores
plants, herbivores, carnivores or omnivores
Which organism is a herbivore?
sun
grass
grasshopper
bird
Which organism can make its own food?
rabbit
daisy
mushroom
earthworm
In this food chain, the hawk gets its energy from...
the plant
the small fish
the large fish
the sunlight
In this prairie food web, if all of the antelopes were removed, which animal populations would most likely decrease?
the squirrels
the squirrels and hawks
the grass
the mountain lions and coyotes
In this pond food web, if all of the sunfish were removed from the pond, what would the immediate result be?
the snapping turtles would lose a source of energy
the bass would have fewer minnows to eat
the snails would lose a source of energy
the insect larvae population would decrease
What is the job of the mushroom in the food chain?
It provides food for the hawk.
Once the hawk dies, the mushroom will break it down to provide nutrients to the grass.
It provides another food source for the grasshopper.
It gets its energy from the producer.
If the hawk were removed from the food chain, what consumer would increase in population?
the mushroom
the snake
the mouse
the grasshopper
How does the energy from the sun flow from producers to consumers in this food web?
When the marsh grasses and cattails are eaten by the grasshoppers and crickets
When the shrews, frogs, and snakes warm themselves in the sun
When the marsh grasses and cattails die and the energy goes into the ground
When the animals breathe in the oxygen given off by the marsh grasses and the cattails.
Which statement correctly describes the transfer of energy in a food chain in this wetland?
Energy is transferred from hawks to snakes to frogs to crickets.
Energy is transferred from marsh grasses to grasshoppers to snakes to frogs.
Energy is transferred from cattails to crickets to shrews to hawks.
Energy is transferred from snakes to shrews to hawks.
In what order does energy flow through almost ALL food webs?
Producer to consumer to decomposer to sun
Sun to consumer to producer to decomposer
Decomposer to consumer to producer to sun
Sun to producer to consumer to decomposer
Which type of organism is ALWAYS next to the sun in a food chain?
Producer
Consumer
Decomposer
Herbivore
Which organism is the secondary consumer in this food chain?
The sun
The grass
The grasshopper
The bird
Which organism is at the 3rd trophic level in this ecological pyramid?
producers
primary consumer
secondary consumer
tertiary consumer
In which trophic level would you find a rabbit?
First trophic level
Second trophic level
Third trophic level
Fourth trophic level
Which of the following would you find at the first trophic level?
horse
lion
robin
a mesquite tree
What percentage of energy is lost with each transfer of energy as you move up the ecological pyramid?
10%
20%
30%
40%
In most cases, the number of organisms ________ at each higher trophic level.
stays the same
increases
decreases
increases and decreases at the same time
