WorksheetsWhere Have All Creatures Gone
Total questions: 25
Worksheet time: 13mins
A lichen is a combination of fungus and algae that lives on the sides of trees, rocks, and other materials. The fungus provides the algae with water and minerals and the algae uses the water and minerals to make food for both organisms. What type of relationship does the lichen represent?
commensalism
mutualism
parasitism
Which of the following diagrams correctly represents an energy pyramid in a living system?
A
B
C
D
In which energy pyramid has the student correctly arranged the organisms?
Using the illustrations, which of the following events would speed up the process of ecological succession in the pond?
rise in temperatures
a volcanic eruption
a large flood
use of fertilizers
Which of the following is correctly arranged from the lowest trophic level to the highest trophic level?
Bacteria, frog, eagle, hawk
Algae, deer, wolf, hawk
Grass, mouse, snake, eagle
The diagram shows a general representation of an energy pyramid for a living system. As energy flows through the pyramid,
10% of available energy is passed to each increasing trophic level
25% of energy is gained at each increasing trophic level
energy remains the same at each trophic level
energy increases at each trophic level
Which of the following is correct about organisms in this rain forest food web?
Jaguars are secondary consumers that receive their energy from primary producers.
Toucans are tertiary consumers that receive their energy from primary consumers.
Orchids are producers that receive their energy from secondary consumers.
Butterflies are primary consumers that receive their energy from producers.
Egrets walk behind a herd of cattle. As the cattle trample the soil, insects are uncovered and the egrets eat the insects. This is an example of
parasitism
commensalism
mutualism
After a fire in a Florida pine forest, new growth occurs. Which process allows this to happen?
succession
competition
predation
symbiosis
After a town is abandoned, the concrete parking lots remain empty and inactive for hundreds of years. What is the most likely order of ecological succession in that area?
lichens → grass → trees → shrubs
lichens → grass → shrubs → trees
shrubs → grass → trees → lichens
grass → trees → lichens → moss
The diagrams shows a sequence. Which phrase best describes the sequence of diagrams?
The development of a terrestrial ecosystem into an aquatic ecosystem.
The replacement of a natural community in an orderly manner.
The path of energy through a food web in a natural community.
The alteration of an ecosystem by a natural disaster.
Which of the following statements is NOT true of consumers?
They receive their energy indirectly from the sun.
They are also called heterotrophs.
They are able to synthesize their own food.
Which of the following is an abiotic factor in an ecosystem?
plants
fungus
water
What is one difference between primary and secondary succession?
What is one difference between primary and secondary succession?
Secondary succession begins on soil and primary succession begins on virtually lifeless areas.
Primary succession modifies the environment,
and secondary succession does not.
Secondary succession begins with lichens
and primary succession begins with trees.
The figure represents the energy pyramid in an ecosystem. The letters A, B, C, and D represent different levels within the energy pyramid. Which of the following statements is most likely correct?
The amount of energy is identical in each level of the pyramid
The amount of energy increases at each successive level from D to A.
The total amount of energy at level D is less than the total amount of energy at level B.
The total amount of energy needed to sustain the pyramid enters the ecosystem at level C.
The diagram shows a food web.In the food web,
all of the organisms feed on one other type of organism
all of the organisms are producers and consumers.
krill, snails, and abalones are primary consumers
sharks, herring, and salmon form the base level of energy flow.
The food web below is missing the direction of energy flow between organisms. Which of the following correctly shows a flow of energy through the food web?
from the floating plant to the minnow to the duck
from the duck to the minnow to the alga
from the carnivorous fish to the minnow to the duck
from the minnow to the raccoon to the carnivorous fish
Which of the following would most likely happen if the moose disappeared?
The number of wolves would increase, as they would no longer compete with moose for food resources.
The number of earthworms would decline as the amount of available organic matter would decrease.
The number of beavers would decline as they became the wolves' primary food source.
The number of trees would decline, as moose would no longer fertilize them.
Ecological succession can end when a community is not replaced by another one. This community is called a "climax community." Using the illustrations, which of the following would dominate the climax community shown in the ecological succession of the pond?
tall trees
low-growing plants
green algae
tall-growing grasses
Which of the following organisms most likely filled the pond first?
low-growing plants
green algae
tall-growing grasses
flowering plants
While watching a nature program on TV about animals in an African savanna, Khloe realized that she was seeing a food chain in action. She saw some zebras eating grass and shrubs, and then she saw cheetahs eating other zebras. If Khloe were to draw a food chain for the environment on the nature program, to which living thing should the last arrow point?
cheetah
grass
zebra
shrubs
From where does the energy originally come?
water
soil
oxygen
sunlight
What would happen if the producers disappeared?
Sunlight would be absorbed by the primary
consumers for energy production.
The primary consumers would start to eat the secondary consumers.
The starting source of energy would be lost for all of the organisms.
More energy would be available for the
tertiary consumers.
What is the ultimate function of ecological succession in an environment?
to create different types of environments on Earth
to form environments that can never be destroyed
to limit the kinds of organisms that live in an environment
to rebuild biodiversity through natural stages
This relationship is between a spider crab and algae. Spider crabs live in shallow areas of the ocean floor, and greenish-brown algae lives on the crabs' backs. This algae on the crabs back makes the crabs blend in with their environment, and unnoticeable to predators. The algae gets a good place to live and the crab gets camouflage. What form of symbiosis is described this relationship?
parasitism
commensalism
mutualism
