Which option shows the correct order of organization within multicellular organisms (from least complex to most complex)?
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cell → organ → organ system → tissue → organism
cell → tissue → organ → organ system → organism
organ → organ system → cell → organism → tissue
cell → tissue → organ → organ system → organism
The correct order of organization within multicellular organisms, from least complex to most complex, is:
cell → tissue → organ → organ system → organism
To determine the correct order of organization within multicellular organisms, we need to understand the levels of organization and their relationship to one another.
Here are the levels of organization, listed from the simplest to the most complex:
1. Cells: Basic functional and structural units of life.
2. Tissues: Groups of similar cells that work together to perform a specific function.
3. Organs: Composed of different tissues that function together to carry out a specific task.
4. Organ Systems: Consist of multiple organs that work together to perform a particular function.
5. Organisms: A complete individual living thing made up of various organ systems.
Based on this information, let's consider the options provided.
Option 1: cell → organ → organ system → tissue → organism
This option correctly starts with cells and ends with an organism, but it incorrectly places the organ system before the tissue. The correct order is tissues made up of cells, then organs made up of tissues, and finally organ systems made up of organs.
Option 2: cell → tissue → organ → organ system → organism
This option correctly follows the order from least complex to most complex. Starting with cells, it progresses to tissues, then organs, followed by organ systems, and finally the whole organism. Therefore, this option shows the correct order of organization within multicellular organisms.
Option 3: organ → organ system → cell → organism → tissue
This option incorrectly starts with the organ, which is already a complex structure composed of multiple tissues. Additionally, it places the cell and the tissue in different positions than expected. Therefore, this option does not represent the correct order of organization.
So, the correct option showing the order of organization within multicellular organisms is:
cell → tissue → organ → organ system → organism.