Niche Partitioning and Species Coexistence

The ecological role an organism performs in their specific environment is considered the organism's...

• Habitat

• Population

• Biome

• Niche

"Organisms that have moved to a location that does not naturally support them."

• Invasive species

• Destructive species

• Unwelcomed species

• Infected species

Tags

NGSS.MS-LS2-5

a relationship between two species in which both species compete for limited resources such that both species are negatively affected by the relationship

• Symbiosis

• interspecific competition

• species richness

• species-area effect

the differentiation of niches that enables similar species to coexist in a community

• character displacement

• climax community

• resource partitioning

• pioneer species

Tags

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What effect does biodiversity have on a community?

• It makes destruction by insects impossible. 
• It makes primary succession more likely.   
•  It enables species to survive in a desert.
• It enables the community to withstand changes.

Tags

NGSS.MS-LS2-5

The ecological niches of three bird species are shown in the diagram. What is the advantage of each bird species having a different niche?

• As more birds feed higher in the tree, available energy increases.
• More abiotic resources are available for each bird.
• Predators are less likely to feed on birds in a variety of locations.
• There is less competition for food.

Tags

NGSS.MS-LS2-1

When put together, one organism outcompetes the other for resources.  This is an example of:

• competitive exclusion principle
• speciation
• biological niche
• evolution

Tags

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What is a keystone species?

• A species that helps to hold an ecosystem together

• A species that lives in or around rocks

• Keys and stones have nothing to do with ecology

• A keystone isn't a living thing, it's just a stone

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Based on the graph shown, how can you tell sea otters are a keystone species?

• as the sea otter population decreases, biodiversity increases
• as sea otter population increases, biodiversity increases
• changes in the sea otter population have little effect on biodiversity 
• the sea otter population dereases due to the presence of urchins

Tags

NGSS.MS-LS2-1

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Biodiversity refers to

• extinct species
• the variety of species on Earth
• nonrenewable resources
• the rate of species decline

Tags

NGSS.MS-LS2-5