How many domains of living things are recognized, and which one contains only one kingdom?

• Two domains; Bacteria contains one kingdom

• Three domains; Archaea contains one kingdom

• Four domains; Eukarya contains one kingdom

• Three domains; Bacteria contains one kingdom

What is the main characteristic of all archaebacteria?

• They are multicellular and have a nucleus

• They are microscopic, unicellular, and reproduce sexually

• They are microscopic, unicellular, and lack a nucleus

• They are large, multicellular, and have a nucleus

Where are archaebacteria best known for living?

• In mild environments such as grasslands and forests

• In urban environments with high pollution

• In extreme environments where most organisms cannot survive

• In aquatic environments with abundant oxygen

What are organisms that live in extreme environments called?

• Eubacteria

• Extremophiles

• Prokaryotes

• Autotrophs

Most organisms belong to one of the four kingdoms of which domain?

• Archaea

• Bacteria

• Eukarya

• Protista

Which type of protists are important decomposers, returning nutrients to the ecosystem?

• Plant-like Protists

• Animal-like Protists

• Fungus-like Protists

• Bacteria-like Protists

Aside from breaking down matter, what other important role do some fungi play in ecosystems?

• Produce oxygen through photosynthesis

• Capture and store carbon

• Establish symbiotic relationships with other organisms

• Regulate soil temperature

What characteristic do all plants have?

• All plants can move by themselves

• All plants lack cell walls

• All plants have cell walls

• All plants are heterotrophic

How do plants contribute to aquatic ecosystems?

• Providing shelter and food sources

• Filtering dangerous gases like formaldehyde

• Causing food webs to collapse

• Becoming invasive species

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-5

What role do plants play in terrestrial food webs?

• They are secondary consumers

• They are decomposers

• They are the producers at the base of all terrestrial food webs

• They have no role in terrestrial food webs

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3