Predator-Prey Interactions

Which graph shows a situation in which the number of predatorss in a population depends on the number of prey?

• Graph F
• Graph G
• Graph H
• Graph J

All of the following statements concerning characteristics of predator-prey relationship are correct EXCEPT:

• The population of predators most often eliminates the population of prey
• A rise in the population of predators is followed by a decrease in the population of prey.
• A rise in the population of prey is often followed by a rise in the population of predators.

In the aquatic food web below, which two organisms have a predator-prey relationship?

• Shad and sturgeons
• Sturgeons and blue crabs
• Blue crabs and rangia clams
• Phytoplankton and amphipods

Which of the following describes a predator/prey relationship in a marine environment?

• Phytoplankton in the sea make food from sunlight.
• Sharks consume smaller fish they catch in the ocean.
• Frogs in a pond catch and eat flying insects.
• Fish of the same species compete for plants to eat.

What is this called?

• Food Web
• Food Chain
• Abiotic Factors
• Biotic Factors

In the energy pyramid below, which organism has the least amount of energy available?

• Producers
• Herbivores
• Carnivores
• Top Predator

Where do crickets get their energy?

• Cattails
• Marsh Grass
• Grasshoppers
• Shrews

What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.
• The shrew population would decrease dramatically.
• The willow tree population would decrease.
• Foxes would die because they would have no food source. 

What would be an INDIRECT result of removal of lynx and hawks from this ecosystem?

• Snowshoe hare population would increase
• Fox population would increase
• Shrew population would decrease
• Willow population would decrease

This is an example of a:

• Nitrogen Cycle
• Water Cycle
• Biosphere
• Predator Prey Relationship