Eco Interactions Quiz

A drought has hit this grassland biome. How will this effect the rabbit population?

• The rabbits will increase in number.

• The rabbit population will stay the same.

• The rabbit population will decrease.

• The rabbit population will become extinct immediately.

Which of the following is true based on the graph?

• In 1920 there were approximately 60 lynx

• The lynx population fluctuates more than the hare population

• From 1850 - 1860 there were fewer hares than lynx

• The hare population peaked at 1894

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.

• mutualism

• commensalism

• competition

• parasitism

Red-billed oxpeckers are birds that often feed on parasites that infest impala.  This is an example of _______.

• commensalism

• mutualism

• neutralism

• competition

Which of the following best describes a symbiotic relationship?

• A relationship where both species compete for the same resources.

• A relationship where one species benefits and the other is unaffected.

• A relationship where both species benefit from each other.

• A relationship where one species benefits at the expense of the other.

What is an example of a predator-prey relationship in an ecosystem?

• A bee pollinating a flower.

• A lion hunting a zebra.

• A clownfish living among sea anemone.

• A tapeworm living in the intestine of a mammal.

In population dynamics, what does the term "carrying capacity" refer to?

• The maximum population size that can leave a territory.

• The maximum population size that an environment can sustain indefinitely.

• The rate at which a population increases in size.

• The number of individuals moving out of a population.

Which of the following is NOT a type of symbiotic relationship?

• Mutualism

• Commensalism

• Parasitism

• Predation

What factor can lead to an increase in a population's size?

• Increased predation

• Decreased food supply

• Increased birth rate

• Increased competition

Which of the following best describes commensalism?

• A relationship where both species benefit.

• A relationship where one species benefits and the other is harmed.

• A relationship where one species benefits and the other is unaffected.

• A relationship where both species are harmed.