Unit 2 Review

Which is NOT an abiotic factor:

• soil
• air
• bacteria;
• water

What might happen if you remove a primary consumer from the ecosystem?

• There would be more food for secondary consumers.
• The number of primary consumers would increase.
• The number of plants would increase.
• The number of secondary consumers would increase.

What might occur when a carnivore is removed from the food web?

• A)  Nothing.  Organisms cannot impact things below them on the energy pyramid.
• B)  Primary consumers will overpopulate.
• C)  Plants will be over browsed by herbivores.
• D)  both B and C might occur.

A consumer that hunts is called:

• a producer.
• an omnivore.
• a predator.
• a herbivore.

symbiotic relationship in which one organism benefits and the other organism is harmed 

• secondary succession 
• predation
• pioneer species 
• parasitism

This is an image of a _________.

• consumer
• scavenger
• decomposer
• producer

• A
• B
• C
• D

• A
• B
• C
• D

What level consumer is the deer?

• Consumer 1
• Consumer 2
• Consumer 1 & 2
• Producer

A connection of food chains with many food energy paths in an ecosystem is a ____________.

• ecosystem
• food web
• environment
• population