Keystone Species Quiz

What do the arrows represent in a food chain?

• Where the energy is going

• Separation of trophic levels

• Feeding niches

• Points to who is getting eaten (Kelp eats urchins)

A _________ makes its own energy and starts a food chain.

• Sun

• Primary consumer

• Decomposer

• Producer

Which model is used to show the amount of energy available at each level, as well as the organisms in each trophic level?

• Food chain

• Energy Pyramid

• Food Web

• Energy Web

The 10% rule states that only 10% of the available energy makes it from one trophic level to the next. If the producers have 100,000 kcals available how many kcals would be available to the primary consumers?

• 10

• 100

• 1,000

• 10,000

In the anchoring phenomenon video, Sheyma Island had no sea otters and too many sea urchins that ate all the kelp. What happens to the energy levels when there are too many of a species?

• The energy stays the same

• Less energy is available.

• More energy is available.

Which species ended up being the species that kept the ecosystem in balance?

• Sun

• Kelp

• Urchin

• Otter

A species that is the most important to a given ecosystem is called...

• The MVP

• Trophic Cascade

• The Primary Consumer

• Keystone Species

Trophic Cascade is...

• When all the levels have the same energy

• When the keystone species is gone, and the ecosystem fails

• When the energy moves in reverse (secondary has most energy)

• When an animal gets too much energy