Biotic Factor in Ecosystems Quiz

Match the following organisms with their place in the kelp forest food chain:

• Primary Consumer

• 
• Tertiary Consumer

• 
• Apex Predator

• 
• Secondary Consumer

• 
• Producer

• 

When barnacles attach themselves to whales in order to "take a ride" to plankton-rich waters, this benefits the barnacles, and is thought to not affect the whales.

What type of symbiotic relationship is this?

• Commensalism

• Mutualism

• Parasitism

Which level of organism on a food chain would be called trophic level "T2"?

• Secondary Consumer

• Primary Consumer

• Tertiary Consumer

• Apex Predator

What is the growth rate of kelp in kelp forests?

• 2 inches per year

• 20 inches per day

• 3 meters per day

Sponges are very abundant in coral reefs. If they become too successful, however, they take needed food and other resources from the corals that make up the reef. If sponges obtain more of the resources than corals do, causing corals to die, what type of relationship is this?

• Predation

• Parasitism

• Competition

A clownfish lives in an sea anemone. The anemone kills fish that might otherwise eat the clownfish, giving it a safer home. The clownfish attracts prey fish for the anemone to eat, providing it with food. Both organisms benefit.

What type of symbiotic relationship is this an example of?

• Commensalism

• Parasitism

• Competition

• Mutualism