Levels of Biological Organization
Explore the hierarchical structure of life from atoms to the biosphere with this Grade 9 science worksheet.
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Levels of Biological Organization
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Read each question carefully and provide your best answer based on your understanding of the levels of biological organization.
1. Which of the following is the smallest unit of life?
Atom
Molecule
Cell
Tissue
2. A group of similar cells working together to perform a specific function is called a/an:
Organ
Organ system
Tissue
Organism
3. The is the basic unit of structure and function in all known living organisms.
4. A group of different organs that work together to accomplish a common purpose is called an .
5. All living things are made up of only one cell.
True
False
6. A population consists of all the different species living in a particular area.
True
False
7. List the levels of biological organization from the simplest to the most complex, starting with the organism level.
Match each level of organization with its correct description.
8. Organism
a. All the populations of different species living and interacting in a particular area
9. Population
b. An individual living thing
10. Community
c. All the members of one species living in a particular area
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