There is a mutualistic relationship between trees and birds. The trees provide shelter for the birds, and the birds help scatter seeds for the trees. This means the relationship is an example of mutualism.
Wolves are an important predator in Yellowstone National Park. When wolves were removed, the elk population grew too large. The elk ate too many trees and shrubs. The lack of shrubs and trees meant the bird population went down, as they needed the shrubs and trees for their habitat. Later, when the wolves returned and were able to decrease the elk population, the numbers of trees (like the cottonwood tree) and shrubs were able to increase. When the trees and shrubs increased, the bird populations grew. The birds and the trees help each other. The birds help scatter seeds for new trees, while the trees provide shelter for the birds.
There is a ______ relationship between trees and birds. The trees ______ the birds, and the ______ birds the trees. This means the relationship is an example of _____.
11 answers
Pythons are not native to Florida, but people who originally kept pythons as pets have allowed them to escape into the wild and/or have intentionally released them into the wild. Invasive pythons have been very successful predators in Florida. They like to eat many different species, including opossum, raccoons, bobcats, and rabbits. The following graph shows relative impacts of invasive pythons on the populations of several native species that are eaten by the pythons. Read the headline of the passage above. Just from the headline, what is a likely claim of the passage?
Native pythons are killing invasive prey.
Native pythons are killing invasive prey.
Invasive pythons are having a negative impact on the native ecosystem.
Invasive pythons are having a negative impact on the native ecosystem.
Invasive pythons are having a positive impact on the native ecosystem.
Invasive pythons are having a positive impact on the native ecosystem.
Native prey are having a negative impact on python populations.
Native pythons are killing invasive prey.
Native pythons are killing invasive prey.
Invasive pythons are having a negative impact on the native ecosystem.
Invasive pythons are having a negative impact on the native ecosystem.
Invasive pythons are having a positive impact on the native ecosystem.
Invasive pythons are having a positive impact on the native ecosystem.
Native prey are having a negative impact on python populations.
A likely claim of the passage, based on the headline, is "Invasive pythons are having a negative impact on the native ecosystem."
Spider Crab and Algae: Small spider crabs live in shallow ocean areas. Certain algae species live on the backs of the crabs. The algae coloration allows the crabs to blend into the ocean floor so that they are camouflaged. In return, the algae have a convenient habitat on the backs of the crabs. what relationship is this?
The relationship between the spider crabs and the algae is an example of commensalism. In this relationship, the algae benefit by having a convenient habitat on the crabs, while the crabs are not significantly affected by the presence of the algae. The crabs gain camouflage, which helps them evade predators, but this benefit is primarily an indirect effect of the algae's presence.
Hawk and Mouse: Hawks are excellent hunters with great eyesight. They can see mice as the mice scurry in fields, and they quietly swoop down to capture the mice for their next meals. what relationship is this?
The relationship between hawks and mice is an example of predation. In this relationship, hawks (predators) hunt and capture mice (prey) for food. The hawk benefits by obtaining a meal, while the mouse is negatively affected as it is killed and consumed by the hawk.
Egret and Cattle: Some species of egrets (a type of bird) live near cattle fields. When the cattle graze, they cause insects to move out of their hiding places. The egrets use that opportunity to capture the insects for food. The cattle don't seem to notice the egrets. what relationship is this?
The relationship between egrets and cattle is an example of commensalism. In this relationship, the egrets benefit by feeding on the insects that are disturbed by the grazing cattle, while the cattle are not significantly affected by the presence of the egrets. The egrets gain food, but the cattle neither benefit nor are harmed.
Lion and Cheetah: Lions and cheetahs are both fierce hunters. They both enjoy eating a variety of other animals, such as gazelles. If the populations of smaller animals were to decrease, it would be hard for both lions and cheetahs to find enough food. what relationship is this?
The relationship between lions and cheetahs, in this context, is an example of interspecific competition. Both species are competing for the same food resources (such as gazelles and other animals). If the populations of the prey species decrease, both lions and cheetahs would struggle to find enough food, illustrating how they negatively affect each other's ability to thrive due to the competition for limited resources.