Food Web Review

Which are the following are missing from the food web shown above?

• Producer

• Decomposer

• Omnivore

• Predator

A marine ecosystem is represented here. What is lost to the environment at each of the trophic levels of this ecosystem?

• Nutrients from the soil

• Living space for the organisms

• Food Sources

• Heat

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

A terrestrial food web is shown. Which of the following lists only organisms that are secondary consumers in this food web?

• Mice, rabbits, herbivorous insects, squirrels

• Predaceous insects, toads, spiders, foxes

• Spiders, foxes, owl, hawks, snakes

• Insectivorous birds, seed eating birds, owls, hawks

This food web shows the flow of energy through a sagebrush-steppe ecosystem. Which of these organisms are in a trophic level that receives a larger percentage of the energy by the producers than the percentage received at the bat's trophic level?

• Mountain Lion

• Snake

• Hawk

• Ground Squirrel

The amount of energy the producers in this energy pyramid provide the primary consumers is 54,000 joules. From this amount, 540 joules are provided to the tertiary consumers. Based on this model, how many joules were provided to the tertiary consumers?

• 53,460 J

• 5,400 J

• 540 J

• 54 J

Part of a hydrothermal vent food web is shown here. Which organisms are both secondary and tertiary consumers in this food web?

• Chemosynthetic bacteria and amphipods

• Zooplankton and mussels

• Ratfish and octopuses

• Galatheid Crabs and Zoarcid fish

Which organism in this food web is the producer?

• Grass

• Grasshopper

• Fish

• Hawk

Which of these is a model of the most complete food chain?

• Primary consumer -> decomposer -> tertiary consumer -> secondary consumer

• Producer -> primary consumer -> secondary consumer ->à decomposer

• Decomposer -> primary consumer -> producer -> secondary consumer

• Primary consumer -> secondary consumer -> decomposer -> tertiary consumer

A food pyramid represents the relative amount of energy in trophic levels. Which of the following correctly shows a food pyramid?

• 
• 
• 
• 

The populations of wolves and other large predators have decreased throughout the United States. This disruption of the natural food web will most likely lead to

• a decrease in prey animals

• the overpopulation of prey animals

• an increase in producers

• the overpopulation of scavengers