Powers 7th NGSS MS-LS2-2

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1. A bee pollinates a flower. The flower in turn provides the bee with nectar and pollen to bring back to the hive as food. What best describes this ecological interaction?

• Herbivory
• Competition
• Mutualism
• Parasitism

2. A zebra grazes on grass. What best describes this ecological interaction?

• Herbivory
• Competition
• Mutualism
• Parasitism

3. A barn owl kills and consumes a mouse. What best describes this ecological interaction?

• Herbivory
• Predation
• Mutualism
• Parasitism

4. A robin and a blue jay both eat the same type of insect. What type of interaction is this?

• Herbivory
• Competition
• Mutualism
• Parasitism

5. An antelope walks through grass, insects become active and are seen and eaten by birds. This neither harms nor benefits the antelope. What type of interaction is this?

• Herbivory
• Competition
• Mutualism
• Commensalism

6. Mistletoe extracts water and nutrients from the spruce tree to the tree’s detriment. What type of interaction is this?

• Herbivory
• Competition
• Mutualism
• Parasitism

7. According to the competitive exclusion principle, which of the following is true?

• No two species can occupy the same habitat at the same time
• Some species prefer to cooperate rather than compete
• Predators act as selecting agents
• No two species can occupy the same niche at the same time

8. Predator/prey relationships have what affect on an ecosystem?

• Predators keep getting larger because of all the food they eat
• Predation may harm the individual but benefit the population.
• Predator/prey relationships are not essential to stability of an ecosystem
• Predators only eat small animals

9. Humans have bacteria that live in our stomach and intestines. These bacteria are adapted to survive in this environment and have difficulty surviving elsewhere. The bacteria help humans to digest food. This is an example of which interaction?

• Herbivory
• Competition
• Mutualism
• Parasitism