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WorksheetsSymbiosis Ecology
Total questions: 22
Worksheet time: 11mins
Pseudoscorpions often hitch rides on the backs of large beetles or true bugs. What is the ecological relationship?
Mutualism
Commensalism
Parasitism
Competition
In some grassland ecosystems, lions are predators that consume zebras. In several estuary ecosystems, fish lice are parasites that consume the blood of fish. How are these two relationships of predation and parasitism similar?
Only one organism in each relationship
dies.
Both organisms in each relationship are
harmed.
Only one organism in each relationship benefits.
Neither organism in each relationship is
harmed.
Lichens in a forest ecosystem are made up of fungi and algae living together. The fungi benefit from food produced by the algae. The algae benefit from nutrients and water absorbed by the fungi. Which of the following relationships in different ecosystems is most similar to the interaction of the fungi and algae?
mutualism between fungi and ants
parasitism between fungi and humans
commensalism between birds and trees
competition between algae and aquatic plants
Remoras are small fish that attach to sharks but do not harm them. When sharks tear prey apart, remoras eat the leftovers. What relationship do remoras have with sharks?
mutualism
parasitism
predator-prey
commensalism
Hummingbirds share a mutualistic relationship with the flowers they feed on. Which of these statements about the symbiotic relationship between the flower and the hummingbird is true?
Both the flower and the hummingbird are helped.
Both the flower and the hummingbird are harmed.
The flower is harmed, and the hummingbird is helped.
The flower is helped, and the hummingbird is harmed.
One relationship between organisms is that of predator-prey. Which of the following is the best description of a predator?
An organism that participates in symbiosis
An organism that eats
another organism.
An organism that is eaten by
another organism
An organism that benefits at the expense of another organism.
Which of these statements shows that hermit crabs and anemones have a relationship of mutualism?
Hermit crabs and anemones live in the same ecosystem and can eat similar organisms.
Anemones can move on their own by using their tentacles and pedal disk. The pedal disk is on the side of the anemone that is opposite its mouth.
Anemones cannot move very quickly, but they can sting predators. When an anemone is riding on a hermit crab’s back, the anemone protects the crab from predators
When hermit crabs grow too big for a shell, they leave it behind and move to a larger shell. If an anemone has attached itself to the old shell, the hermit crab will move the anemone to its new shell.
