Trophic Levels

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

Eat primary consumers (can be carnivores and omnivores)

• Tertiary Consumers
• Secondary Consumers
• Quaternary Consumers 
• Top Predators 

Click on the picture to answer the question. What is true about a food chain?

• It is just 1 path of energy.

• It is all possible energy paths.

Look carefully at the image. If energy is lost as it moves up the food chain, what trophic level has the most amount of energy?

• 1st level - producers

• 2nd level - primary consumers

• 3rd level - secondary consumers

• 4th level - tertiary consumers

Organism that makes its own food

• consumer

• producer

• decomposer

• predator

The fox in this food web would be considered a:

• Tertiary Consumer
• Producer
• Secondary Consumer
• Primary Consumer

Which organism recieves the least amount of energy from the producer?

• Owl
• Grasshopper
• Lilypad
• Mouse

The primary consumer is

• Grass

• Grasshopper

• Mouse

• Owl

According to the image, what is the primary consumer in the food chain?

• plant

• insect

• mouse

• snake

The efficiency of energy transfer from a lower trophic level to the next highest level is roughly

• 1%
• 10%
• 100%
• 1000%