Ecology

In which example of a nutritional relationship is an organism harmed?

• alga and fungus in a lichen

• nitrogen-fixing bacteria and clover

• remora and shark

• athlete's foot fungus and humans

Which two groups of organisms are most likely to be pioneer organisms?

• songbirds and squirrels

• lichens and algae

• deer and black bear

• oak and hickory trees

A particular species of freshwater mussel inhabits the shallow water of a large lake, where it lives and breeds. These mussels are referred to as

• an abiotic condition

• Population

• an aquatic biome

• Ecosystem

Two abiotic factors that determine which terrestrial biome is found in a geographical area are

• green plants and oxygen

• temperature and moisture

• bacteria and carbon dioxide

• producers and consumers

Tags

NGSS.MS-ESS2-4

The stable stage that is established in an area as a result of the process of ecological succession is known as the

• heterotroph community

• pioneer stage

• biotic stage

• climax community

The living or once living organisms in an ecosystem

• Biology

• Abiotic

• Biotic

• Ecology

Tags

NGSS.MS-LS1-1

Which statement best describes the pioneer organisms involved in ecological succession?

• They do not require sunlight

• They are the last organisms to appear

• They modify the environment

• They are restricted to desert biomes

In ecology, a population is defined as all the

• members of a single species in the biosphere

• members of a given genus inhabiting a given area

• members of a single species inhabiting a given area

• abiotic and biotic factors in a given location

What are the biotic factors in this image?

• fish, birds, grass

• water, soil, rocks

• sunlight and water

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What are groups of different populations (different species) living together in the same place at the same time called?

• An organism

• A population

• A community

• A biosphere