Question

Describe the complexity in structure of organisms

Answer 1

A complex organism is an organism which has multiple organs that are performing different functions and helps in the sustenance of the body. Multiple organisms of a species form a group called population. The complexity can be seen in organisms even from the cellular structure and organization of different organelles that help in the working of the cell.

Complete answer:
Complexity in structure of organisms is made into cells followed by tissues and it is followed by organs followed by organ system and lastly organisms. They are arranged in hierarchical levels of organization.
Cells are the basic unit of life.
A tissue is a group of cells that are identical and performs the same function. All the cells are working together to perform a particular function.
An organ is a structure where different tissue groups come together and work together. Various organs work together to maintain the internal environment and make the organ system.
Various organ systems make up the entire organism.

Note: The intricate and complex system present in the organism helps the researchers to describe the evolution that took place from the beginning to the current state.
More variation and different characteristics are demonstrated that are complex in higher integrative levels than lower integrative levels.
With the lowest level consisting of subatomic particles present, these levels are based upon a physical foundation.To study genetics we don't need to consider objects as tiny as subatomic particles. Rather, the spectrum of integrative levels that ranges from macromolecules to populations is most relevant
Cells are considered the unit block of life and it is one of the most complex structures present in the human body.