1. Levels of Organization

2. Living organisms are considered to be “highly organized” This means that they are made up of different components working together in a specific way.

3. Your body has many organs, such as a heart and _________
Plant organs include stems and ____________
Animal and plant organs are organized into organ systems like the skeletal system and __________

4. What do both plants and animals have in common?
Plants and animals are both made of smaller parts working together to form a whole.

5. Levels of Organization
Cell
Tissue
Organ
System
Organism

7. Cell
vocabulary
word!
cell - the smallest unit of structure and function of living things

8. unicellular
Unicellular organisms are made up of just one cell that performs all of its life functions.
Unicellular organisms do not have levels of organization.
diatoms
euglena

9. Tissue
vocabulary
word!
tissue – a group of similar cells that perform a specific function
ground tissue in leaf

10. animal tissues muscle tissue nerve tissue epithelial tissue
connective tissue

11. plant tissues
protective tissue
transport tissue
ground tissue

12. Organ
vocabulary
word!
organ - group of at least two tissues working together to perform a specific function.
heart
lung
stomach
brain
leaf
stem

16. organ system
system - a group of two or more organs that work together to perform a function.
skeletal system
circulatory system
muscular system
nervous system

18. Organism organism - combines cells, tissues, organs, and systems
vocabulary
word!
organism - combines cells, tissues, organs, and systems

19. multicellular Multi-cellular organisms are made of more than one cell.
They have levels of organization.
Cells that make up multi-cellular organisms may have specific functions.

20. multicellular
Cells, tissues, organs and organ systems make up the structure of multi-cellular organisms.

21. Design your own in your notes.

22. Organism needs All living organisms need certain things to live
Obtain energy (photosynthesis and respiration)
Eliminate waste
Respond to stimuli
grow
Reproduce