Levels of Organization Quiz

The basic unit of structure and function of living organisms

• organ

• organ system

• cell

• tissue

• organism

Biologists organize the environment into ecological layers so they can communicate about the areas more efficiently. The diagram shows an example of the organization. If biologists were discussing a community, which layer on the diagram would they most likely be referencing?

• Layer C

• Layer B

• Layer A

• Layer D

Place the categories in order from smallest to largest.

• ecosystem, community, population, organism

• organism, population, community, ecosystem

• population, ecosystem, community, organism

• organism, community, ecosystem, population

Which of the following is the MOST complex level of organization?

• Organism

• Organ System

• Cell

• Tissue

Any single living individual, and can refer to a single human, animal, plant,

Protista, bacteria, or fungi.

• Community

• Cell

• Population

• Organism

Organisms who are members of the same species in an ecosystem.

• Organism

• Population

• Organ

• Community

Group of populations in an area.

• Organism

• Ecosystem

• Community

• Biosphere

A biological community that includes various species and their physical environment (Biotic and Abiotic Factors).

• Organism

• Community

• Biosphere

• Ecosystem

Where life is found on earth.

• Community

• Habitat

• Ecosystem

• Biosphere

Atom → molecule → organelle → cell→ tissue → organ

→ system → organism

→ population → community

→ ecosystem → biosphere.

• Taxonomic System

• Classification system

• Levels of Organization

• Periodic Table