Symbiotic Relationships, Food Webs, and Trophic Levels

The arrows in a food web display

• Symbiotic relationships

• That nutrients move from predator, to prey

• The direction energy is moving

• Trophic levels

The phytoplankton are found on trophic level ___, and are ___.

• 1 ; producers

• 2 ; consumers

• 1 ; heterotrophs

• 3 ; producers

On average, this much energy transfers from prey to predator:

• 15%

• 5%

• 10%

• 100%

In feeding relationships, not all energy is passed along since:

• It's used by the prey during its life to perform life functions
• The prey has not consumed all the food it possibly could
• The predator uses so much energy to catch the prey
• The prey was very tried, and likely sick, when it was eaten

The primary consumer of this energy pyramid is

• B

• A

• D

• C

Which animal is the apex predator?

• hawk
• lizard
• snake
• grass

Which animal is not the apex predator but, a predator to a mouse?

• hawk
• rabbit
• snake
• grass

Which of the following is a herbivore?

• cricket
• frog
• hawk
• shrew

Use the diagram to answer the question.
The trout is a source of food for the human and the eagle. When there are more than one organism vying for the same source we call this____?

• Population
• Resources
• Community
• Competition

Bacteria, fungi, and earthworms are examples of: 

• scavengers
• predators
• prey
• decomposers