Levels of Biological Organization
This worksheet covers the levels of biological organization from organelles to the biosphere, including cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and the biosphere.
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Levels of Biological Organization
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Read each question carefully and answer to the best of your ability.
1. Which level of organization is composed of different types of tissues working together to perform a specific function?
Cell
Organ
Organism
Tissue
2. A group of individuals of the same species living in the same area at the same time is called a(n):
Community
Ecosystem
Population
Biosphere
3. The smallest unit of life is the .
4. All the different populations that live together in an area make up a .
5. An consists of all the living organisms in an area as well as their physical environment.
6. Organs are made up of different organ systems working together.
True
False
7. The biosphere includes all parts of Earth where life exists.
True
False
8. List the levels of biological organization from the simplest to the most complex, starting with the cell.
9. Provide an example of how a change at one level of biological organization can affect another level.
Match each term with its correct definition.
10. Tissue
a. All the ecosystems on Earth
11. Organ System
b. A group of similar cells working together
12. Biosphere
c. A group of organs that work together