Levels of Organization

      Levels of organization

1. A (an) __________ is a group of similar cells and their surrounding materials performing specific functions.

a)      Cell

b)     Organ

c)      Tissue

d)     Atom

2. A (an) __________ is composed of two or more different types of tissues. 

a)      Tissue

b)     Organ

c)      System

d)     Organism

3. The simplest level of organization of the living organisms is the ____________ level.

a)      Organ

b)     System

c)      Chemical

d)     Tissue

4. Organ systems make up ________________.

a)      Tissues

b)     Cells

c)      Organs

d)     Organisms