Chapter 4.1 Flashcards

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1
Q

Species

A

a group of genetically similar living organisms that are able to interbreed and produce fertile offspring

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2
Q

Autotrophs

A

Organisms that are capable of making their own complex organic molecules from carbon dioxide and other simple compounds

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3
Q

Heterotrophs

A

Organisms that obtain their organic compounds through feeding on other organisms

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4
Q

Mixotrophs

A

Organisms which use both autotrophic and heterotrophic modes of nutrition

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5
Q

Consumers

A

Organisms that gain nutrients by feeding on other organisms using ingestion or absorption

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6
Q

Detritivores

A

Organisms that gain nutrients by feeding on dead organic material and breaking it into smaller organic molecules.

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7
Q

Saprotrophs

A

Organisms that get their nutrients by secreting digestive enzymes into their environment to break down organic debris around them.

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8
Q

Mutualism: definition + example

A

A type of symbiotic relationship where both organisms benefit. The relationship between spider crabs and algae. The algae live on the crabs’ backs. In this way, predators cannot see the crabs because they blend in with their environment through camouflage. The benefit for the algae is that they get a place to live, so both organisms help each other

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9
Q

Commensalism

A

A type of symbiotic relationship where one organism benefits and the other is unaffected.

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10
Q

Parasitism

A

A type of symbiotic relationship where one organism benefits and the other is harmed.

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