Relationships Among Organisms

Question 1

Which organisms are considered predators and scavengers? Check all that apply.

Revolt · Accepted Answer

A: organisms that eat meat; C: organisms that eat the flesh of dead animals

Question 2

Identify the type of symbiosis described. The saguaro cactus provides food for the white-winged dove through its large fruit. The bird consumes the fruit, ingests the seeds, and then deposits the seeds in a new location.

Revolt · Accepted Answer

B: Mutualism

Question 3

Describe the invasion of wild parsnip, including the harm it causes.

Revolt · Accepted Answer

Wild parsnip is an invasive species originally from Europe and Asia that has successfully spread throughout the entire state of Wisconsin. It reproduces very rapidly, which helps it take over native habitats. The plant is hazardous to humans because its sap contains chemicals that can cause severe skin burns upon exposure to sunlight. Management of the plant includes removing it at the root or using a powered brush cutter for larger populations.

Question 4

What are the three main weapons of predators?

Revolt · Accepted Answer

The three main weapons of predators are claws, jaws, and teeth.

Question 5

Identify the type of symbiosis described. The brown-headed cowbirds lay eggs in other birds’ nests. They trick the birds into raising their young. The cowbirds hatch first and push the eggs out of the nest. The cowbirds are then fed by the nest-builder.

Revolt · Accepted Answer

C: Parasitism

Question 6

Check the items you included.

Revolt · Accepted Answer

A: came from Europe and Asia; B: invaded the entire state of Wisconsin; C: can burn your skin; D: reproduces rapidly; E: can be removed at root or with a powered brush cutter for large populations

Question 7

Check the items you included.

Revolt · Accepted Answer

A: claws; B: jaws; C: teeth

Relationships Among Organisms Answers

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