Printable Crossword Puzzle
The 12 Structural Levels in the Hierarchy of Biological
Organization

1. consists of two or more organs -
1. individual living entity
integrated and coordinated to function
2. biological community and all abiotic
3. populations of all species within same
factors of the environment
area
5. all of life's properties first occur
4. localized group of organisims of same
species
8. integrated group of cells with common
structure and function
6. sum of all our planet's ecosystems
9. specialized center of body function
7. smallest unit of an element retaining the
composed of different types of tissues
properties of that element
10. two or more atoms held together by
11. formed body within cells; has specific
chemical bonds
function(s)
Solution
Across:
Down :
1. organsystem
1. organism
3. community
2. ecosystem
4. population
5. cellular
6. biosphere
8. tissue
7. atomic
9. organ
11. organelle
10. molecular