Interactions of Life

Cleaner shrimp are omnivores that get some of their nutrition from eating dead cells and parasites found on fish. The picture shows a cleaner shrimp cleaning an eel. Which type of relationship is shown between a cleaner shrimp and an eel?

• predator-prey because the cleaner shrimp eats the eel's cells

• commensalism because only the cleaner shrimp benefits from cleaning the eel

• parasitism because only the eel benefits from being cleaned by the cleaner shrimp

• mutualism because the cleaner shrimp and eel both benefit from their relationship

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Honeybees travel from flower to flower gathering nectar to eat. Pollen from the flowers sticks to the honeybees and is carried between flowers, which helps the flowers reproduce. What is the relationship between honeybees and flowers an example of? Why?

• mutualism because both the bee and the flower benefit

• parasitism because the bee benefits and the flower is harmed

• predator-prey because both the bee and the flower are harmed

• commensalism because the bee benefits and the flower is unharmed

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The picture shows a cattle egret bird on the back of a buffalo. The cattle egret eats the insects that are disturbed by the buffalo while it grazes. Which term best describes the relationship between the cattle egret and the buffalo?

• parasitism

• mutualism

• predator-prey

• commensalism

The table shows the diet of different organisms that live in the same African habitat.

Animal Diet

zebra short green grass, herbs

antelope shrubs, sagebrush

cheetah antelopes, gazelles, zebra, wildebeest

giraffe leaves, buds from trees

elephant roots, fruit, bark

lion zebra, wildebeest, antelope

Pick two animals that most likely compete for food.

• zebra

• antelope

• cheeah

• giraffe

• lion

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The picture shows a group of aphids on the leaf of a plant. Aphids are insects that feed on the sap of plants. Aphids can destroy a healthy plant by removing all of its sap, or introducing disease to the plant. Which statement best describes the type of relationship that exists between aphids and the plant?

• The relationship is mutualism because both the aphids and plant receive a benefit.

• The relationship is predator–prey because both the aphids and the plant are harmed.

• The relationship is parasitism because the aphids receive a benefit and the plant is harmed.

• The relationship is commensalism because the aphids receive a benefit while the plant is unharmed.

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Bees and butterflies both get nectar from flowers as a food source. If most of the flowers died in a particular area, which best describes what would happen to the bees and butterflies?

• The bees and butterflies would have to compete for food.

• The bees and butterflies would have to find a new food source.

• The bees and butterflies would both benefit from the lack of food.

• The bees and butterflies would all immediately die from lack of food.

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A chimpanzee eats fruits, nuts, leaves, and small mammals. What kind of organism is a chimpanzee?

• carnivore

• decomposer

• producer

• omnivore

The picture shows animals that live in the African savanna. Use the picture to answer any questions that follow.

Select three of the animals that are predators who eat other animals.

• zebra

• crocodile

• gazelle

• leopard

• lion

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The picture shows animals that live in the African savanna. Use the picture to answer any questions that follow.

Select FOUR organisms that depend on producers.

• algae

• crocodile

• buffalo

• zebra

• lion

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Which of the following is NOT an example of a predator with its prey?

• a fox and a rabbit

• a bear and a fish

• a honeybee and flower

• a spider and a fly