Niche and Competition

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

• Habitat

• Population

• Biome

• Niche

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

A relationship in which two different organisms live in close association with each other

• interspecific competition

• Mutualism

• symbiosis

• Commensalism

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

• character displacement

• climax community

• resource partitioning

• pioneer species

Tags

NGSS.MS-LS2-5

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

What is a keystone species?

• A marine species that lives around rocks

• A species with a unique and crucial role in function of its ecosystem

• A species outside the ecosystem

• An abiotic factor of the ecosystem

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5

For plants, ______ can include sunlight, water, and soil nutrients.
For animals, ______can include nesting space, shelter, types of food, and places to feed.

• niche
• communities
• resources
• biomes

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

NGSS.MS-LS2-1

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

NGSS.MS-LS2-2

NGSS.MS-LS2-4