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WorksheetsSymbiosis Review
Total questions: 12
Worksheet time: 13mins
What do you call a close relationship between two different species?
symbiosis
friendship
community
coevolution
Symbiotic relationships (a) biodiversity because, often, the different species support each other to thrive and survive.
Match the following types of relationships to their descriptions:
Both organisms are harmed by fighting over a resource
Competition
One organism benefits at the expense of the other
Parasitism
One organism benefits while the other remains neutral
Commensalism
Both organisms benefit (help each other)
Mutualism
(a) is a common type of symbiosis because all the species involved benefit. For example, a hummingbird drinks (b) from a flower, gaining food. The flower is (c) by the bird. Both species help each other.
Macaws (a large, tropical bird) have strong beaks that can bit through thick shells. They are messy eaters, often opening nuts and droping them on the ground, leaving them behind. Other animals eat the dropped food. What type of relationship is this?
commensalism
parasitism
mutualism
competition
In (a) , one species harms another species to benefit themselves. For example, a flea bites a dog to get (b) . This leaves the (c) with itchy bite marks.
Match the following types of relationships to their descriptions:
Competition
Parasitism
Commensalism
Mutualism
In the temperate forest, there are Autumn Olive bushes that produce berries. Cedar Waxwings eat these berries, as do Woodland Voles. Woodland voles are eaten by snakes. Snakes are eaten by Red-tailed Hawks, which are the apex predator. Identify which 2 species are in competition:
Woodland vole
Autumn Olive
Cedar waxwing
Red-tailed Hawks
Sloths eat cecropia trees. What kind of relationship is this?
herbivory
mutualism
competition
commensalism
Aztec ants live in Cecropia trees. The tree provides a home for the ants and the ants protect the tree from herbivores. What kind of relationship is this?
parasitism
mutualism
competition
commensalism
In mutualism, both species (a) , whereas in competition both species are (b) . Competition often leads to the evolution of new (c) .
A cowbird lays its eggs in the nest of another bird. The other bird expends energy to take care of the baby, finding it food until it's big enough to leave the next. What kind of relationship is this?
parasitism
mutualism
commensalism
competition
