In this tundra food web, if grasses were removed what would happen to the sustainability of the ecosystem?

• There would be an overpopulation of arctic hares and lemmings.
• Polar bears would move to a new ecosystem.
• The ecosystem would collapse, because it lost its main producer.
• Wildflowers would die out from the ecosystem.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

All of the following statements concerning characteristics of predator-prey relationship is NOT correct?

• The population of predators in unaffected by the population of prey

• Most of the energy a predator gains from its prey is lost as heat.

• A rise in the population of prey is often followed by a rise in the population of predators.

• Predators use the energy from their prey to perform metabolic activities.

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.

Look carefully, if you were to draw an energy pyramid for this food web, how many trophic levels would you need?

• 3

• 4

• 2

• 9

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

• Producers

• Herbivores

• Carnivores

• Top Predator

Tags

NGSS.MS-LS2-3

What is a example of a abiotic factor?

• Bacteria

• Fungi

• Coral

• Weather

This is an example of a......

• Pyramid of energy

• Biotic and Abiotic factors

• Pyramid of numbers

• Predator Prey Relationship

Which statement is TRUE about the graph?

• The prey is the green line because there needs to be more prey than predators.

• The prey is the red line because there needs to be more predators than prey.

• The green line is the producers because they are the most important part of the food chain

• The red line is the producers because they are the most important part of the food chain

Predator population lags behind prey population because...

• an increase in predators leads to decrease in prey

• an increase in predators leads to increase in prey

• an increase in predators leads to decrease in producers

• an increase in prey leads to an increase in producers