Ecological Relationships and Invasive Species

Barnacles sometimes live on the outside surface of other larger shelled organisms without causing any harm. What is the ecological relationship?

• Mutualism
• Parasitism
• Commensalism
• Predator-Prey

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Ants protect soft bodied aphids and in return the aphids feed the ants a sugary drink. What is the ecological relationship?

• Cooperation
• Parasitism
• Commensalism
• Mutualism

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A honeybee and flower relationship in which the flower provides nectar for the honey and the honey can help pollinate other flowers is an example of ________________.

• Mutualism

• Parasitism

• Commensalism

• Competition

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An organism that obtains energy from consuming the bodies of other organisms is known as a:

• Mutualist

• Autotroph

• Producer

• Heterotroph

______________ occurs when more than one individual or population tries to use the same limited resource.

• Niche
• Predator-prey
• Availability
• Competition

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Wasps often lay their eggs just inside the eggs of butterflies. The wasp larva (baby wasps) are able to get lots of nutrients and protection from the butterfly/caterpillar egg while its developing. After the caterpillar is born, the wasps continue lurking in the flesh of the caterpillar, soaking up more nutrients and drinking its blood. The wasp larva must keep its host alive, so it avoids damaging the vital organs.

What type of symbiosis is being described?

• predator/prey

• competition

• commensalism

• parasitism

When predator numbers decrease, prey numbers ____________ because fewer of them are being consumed.

• decrease
• increase
• stay the same
• divide in half

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Which of the following describes a relationship of parasitism?

• Oxpecker birds eat parasitic ticks off the backs of zebras

• A tapeworm latches itself in the intestines of a rat, feeding off all the nutrients eaten by the rat

• A polar bear catches a seal for dinner

• Birds feed off the insects that are stirred up from the grasses as cattle move through

Mistletoe takes water and nutrients from the spruce, harming the tree. This is an example of -

• Mutualism

• Commensalism

• Parasitism

• Predation

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What is a NON-NATIVE species?

• a plant or animal that is in its right place

• a plant or animal that has been moved to a new place where it doesn't belong

• a kind of plant that no animals eat

• a kind of plant or animal that doesn't live anywhere

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