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WorksheetsEnergy Flow TEST
Total questions: 25
Worksheet time: 13mins
Each organism has its own role in a food web. Organisms can be producers, consumers, or decomposers. Which of these organisms can be classified as a decomposer?
A student is identifying food chains in a diagram of a food web. Which of the following organisms might be a tertiary consumer?
frog
redwood tree
skunk
bear
Which phase best describes a consumer in a food web?
an organism that forms the base of the food chain
an organism that breaks down dead plants
an organism that gets its energy by eating plants and animals
an organism that converts light energy into chemical energy
All organisms must obtain energy from their environment. Every organism needs this energy in order to grow and reproduce. How do producers obtain energy?
They obtain energy by eating plants, bacteria, and algae.
They extract chemical energy from decaying organic matter.
They extract energy from the chemicals in soil, air, and water.
They capture energy from sunlight and manufacture their own food.
The primary consumers found within the food web is (are) the:
tree
owl and wildcat
mouse, rabbit, and goat
tree and goat
Which leaf part allows for gas exchange during photosynthesis?
chloroplast
chlorophyll
stomata
roots
_____________ is the proper name of the sugar that plants produce during photosynthesis.
Hydrogen
Oxygen
Glucose
Carbon dioxide
In which cell organelle does photosynthesis take place?
nucleus
mitochondria
cell wall
chloroplast
___________ + water + sunlight ----> glucose + oxygen
hydrogen
nitrogen
oxygen
carbon dioxide
Which of the following is a producer in the food web?
krill
zooplankton
phytoplankton
elephant seal
Which organism within the food web directly transfers energy to penguins?
phytoplankton
leopard seal
smaller toothed whales
fish
How do sperm whales get energy in the food web?
By consuming elephant seals
Directly from the sun
By consuming squid
By consuming the producers
What would happen if the "Other seals" population increased?
The krill population would also increase.
The smaller toothed whale population would also increase.
The baleen whale population would also increase.
The carnivorous zooplankton population would increase.
How does biodiversity help an ecosystem?
makes it more sustainable so the ecosystem will not collapse
makes it less sustainable so the ecosystem will not collapse
makes it more sustainable so the ecosystem will collapse
makes it less sustainable so the ecosystem will collapse
The warmer an environment is and the closer an environment is to the equator, the higher the biodiversity of the environment. Based on these observations, which of these environments has the greatest biodiversity?
arctic tundra
mountaintop
tropical rainforest
polar icecap
Which term describes the number and variety of plants and animals living an an area?
natural selection
biodiversity
ecosystem
habitat
This diagram shows a food web found in the mangrove swamps along the Gulf of Mexico coast.
According to this food web, if prawns were wiped out, which organisms would lose their food source directly or indirectly?
molds, bacteria, and snails
small fish, herons, and pelicans
pelicans, snails, and bacteria
small fish, phytoplankton, and herons
Tropical rainforests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability of an ecosystem?
The presence of more species with different adaptations makes it more likely that some organisms will survive an ecological disaster.
Greater genetic variation within species makes it more likely that some individuals will survive a disease outbreak.
The presence of a variety of herbivore species that can feed on a larger number of different produce species helps ensure abundant prey for predators in the ecosystem.
All of the above.
Which ecosystem would be more likely to survive if a disease killed the grasses?
The forest ecosystem because most of the animals can eat other organisms.
The grassland ecosystem because several predators compete for food.
The forest ecosystem because it has three top predators.
The grassland ecosystem because it has many herbivores.
A student researching a northern forest ecosystem learns the following information about feeding relationships in the ecosystem.
Which food web best represents the flow of energy in these feeding relationships?
What is photosynthesis?
Process that converts sunlight, carbon dioxide, and water into glucose and oxygen.
Process that converts glucose and oxygen into sunlight, carbon dioxide, and water.
Process that converts sunlight and glucose into oxygen and carbon dioxide.
Process that converts sunlight and glucose into water and carbon dioxide.
Organisms that produce their own food are called ________.
autotroph
heterotroph
biotic
abiotic
Biotic factors of an ecosystem are ________.
the living things
the nonliving things
organisms that make their own food
organisms that cannot make their own food
Which level directly consumes the primary consumers?
A
B
C
D
E
How much energy is at the producer level?
120
1200
12
1.2
