Marine Food Webs Quiz

What does a food web diagram illustrate?

• The habitat of marine organisms

• The energy levels of marine organisms

• What eats what in a particular habitat

• The migration patterns of marine organisms

What is the base of the trophic pyramid made up of?

• Decomposers

• Producers

• Herbivorous consumers

• Carnivorous consumers

What percentage of energy is typically transferred from one trophic level to the next?

• 5%

• 20%

• 50%

• 10%

Which of the following is a producer in the marine environment?

• Phytoplankton

• Jellyfish

• Squid

• Zooplankton

What is the role of decomposers in the food web?

• They are top-level predators

• They break down dead organisms

• They consume other organisms

• They produce energy from the sun

Which of the following is a top-level consumer in the marine food web?

• Seaweeds

• Sharks

• Zooplankton

• Phytoplankton

What is a keystone species?

• A species that is not affected by changes in the food web

• A species that is at the bottom of the food web

• A species with a greater impact on the food web than expected

• A species that is the most abundant

What is the main characteristic of producers?

• They are decomposers

• They are autotrophic

• They are carnivorous

• They are heterotrophic

Which of the following is a herbivorous consumer?

• Albatross

• Dolphins

• Zooplankton

• Sharks

What happens when a keystone species is removed from a food web?

• The food web becomes more diverse

• A major change occurs

• The food web becomes more stable

• Nothing changes