Food Chain/Ecosystem Organization

 The algae at the beginning of the food chain in Figure 3–1 are*

• Producers

• Consumers

• Decomposers

• Detritivores

Which organism or organisms is/are the tertiary (third) consumer on the food chain?

• Algae

• Zooplankton

• Small Fish

• Squid

• Shark

What animals eat both producers and consumers?

• Herbivores

• Carnivores

• Omnivores

• Decomposers

How much of the squids energy does the shark get for its usage? Keep the energy pyramid in mind. 

• 90

• 100

• 10

• 0

A bird stalks, kills, and then eats an insect. Based on its behavior, which ecological terms describe the bird?

• Herbivore, Consumer

• Carnivore, Consumer

• Carnivore, Producer

• Herbivore, Producer

What is an ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to decomposers?

• Food Chain

• Ecosystem

• Community

• Food Web

Which of the following descriptions about the organization of an ecosystem is correct?

• Communities make up species, which make up populations.

• Populations make up species, which make up communities.

• Species make up communities, which make up populations.

• Species make up populations, which make up communities.