Daily Science Video #3

What does "trophic structure" refer to in a community?

• The physical arrangement of organisms

• The feeding relationships between organisms

• The types of plants in an ecosystem

• The number of different species present

Which type of organism can make its own food using energy from the sun?

• Consumers

• Decomposers

• Producers

• Predators

What do primary consumers typically eat?

• Other consumers

• Producers

• Decomposers

• Apex predators

What is another term for a quaternary consumer?

• Primary producer

• Secondary consumer

• Apex predator

• Herbivore

What happens to the amount of energy as you move up the food chain?

• It increases

• It stays the same

• It decreases

• It fluctuates unpredictably

Approximately how much energy is lost at each trophic level as you move up the food chain?

• 10%

• 50%

• 75%

• 90%

In the example food chain provided, which organism is the producer?

• Grasshopper

• Sunflower

• Field mouse

• Rattlesnake

In the example food chain, what role does the grasshopper play?

• Producer

• Secondary consumer

• Primary consumer

• Apex predator

In the example food chain, what does the field mouse (secondary consumer) eat?

• The sunflower

• The rattlesnake

• The grasshopper

• The red-tailed hawk

In the example food chain, what type of consumer is the red-tailed hawk?

• Primary consumer

• Secondary consumer

• Tertiary consumer

• Apex predator