7th Grade Unit 2 Assessment: Interdependence and Energy Flow in Ecosystems - Missy Radaker | Library | Formative

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Match each to create a true statement.

Draggable item		Corresponding Item
Some animals eat only producers. They are called		producers.
Some animals eat only other consumers. They are called		herbivores.
Plants make their own food. They are called		carnivores.

Below are five ecological relationships. Match the picture that represents each relationship.

Draggable item		Corresponding Item
Predation
Mutualism
Competition
Commensalism
Parasitism

Read the passage below and answer the question.
Birds
Peter observed different birds around his home such as Eastern bluebirds, tree swallows, and starlings living in trees. He decided to study their different interactions. Peter remembered in class that Eastern bluebirds and tree swallows compete for places to live (called nesting sites). In competing for these nesting sites, the tree swallows often win. The starlings do not compete for these nesting sites because starlings cannot fit inside the nesting sites of bluebirds and swallows.
Every day for 5 months, Peter observed and counted the Eastern bluebirds, tree swallows, and starlings in nesting sites around his house. Using this data he created this graph.

Using the graph and the knowledge about nesting interactions of these birds, identify which species (A, B, C) on the graph represents each type of bird.

Draggable item		Corresponding Item
Species A		Eastern bluebirds
Species B		Tree swallows
Species C		Starlings

Review the energy pyramid. Match the trophic level with the correct ecological term.

Draggable item		Corresponding Item
C - snakes		producers
B - rabbits		primary consumers
D - hawks		secondary consumers
A - grass		tertiary consumers