What are the levels of structure in a multicellular organism from the least structure to the most structure?
The levels of structure in a multicellular organism can be listed from the least structure to the most structure as follows:
1. Cells: The basic functional units of life, responsible for carrying out specific tasks within the organism.
2. Tissues: Groups of specialized cells working together to perform a common function. Examples include muscle tissue, nervous tissue, and connective tissue.
3. Organs: Structures composed of multiple tissues that work together to carry out specific functions. Examples include the heart, lungs, liver, and brain.
4. Organ systems: Groups of organs that function together to perform a broader set of tasks or functions necessary for the overall functioning of the organism. Examples include the respiratory system, circulatory system, digestive system, and nervous system.
5. Organism: The highest level of structure, representing the entire multicellular organism as a whole, with all its systems, organs, tissues, and cells working together to maintain homeostasis and carry out life functions.