ARTICLES

The five levels of organization in a multicellular organism are cells, tissues, organs, organ systems and organisms. The level of complexity and functionality increases going from cells to organisms.

www.reference.com/science/four-levels-organization-multicellular-organism-56bba6b3ef8e3a79

Single-celled organisms are organized using specialized cell organelles, while several cells may organize into larger structures, such as tissues and organs. The single-celled organism has all it needs to live independen...

www.reference.com/science/cells-organized-cac60a55bd10d874

Two reasons for cells to divide are repair of tissues and the growth and development of an organism. Cell division is necessary for any organism to grow and, once it has fully developed, to maintain healthy tissues.

www.reference.com/article/two-reasons-cells-divide-e2a2d7f6890f702

SIMILAR ARTICLES

Cell division, also called mitosis, occurs in multicellular organisms to create tissues, organs and organ systems. It is a method of asexual reproduction in unicellular organisms, and it occurs because it’s essential for...

www.reference.com/article/cell-division-occur-c3e60ba3d04defca

Tissue and organ systems are different hierarchical levels of biological organization. Dr. Ingrid Lobo explains for Nature Education that biological organisms are systems of complexity. The basic functional unit of life ...

www.reference.com/article/difference-between-tissue-system-organ-system-a6819ddbe93caf3d

All organisms are made up of cells, have different levels of organization, use energy, respond to and adapt to their environments, grow and reproduce. If something does not exhibit each of these characteristics, it is te...

www.reference.com/article/organisms-common-4fdbd262cf2a3b8

Mesoderm, ectoderm and endoderm tissues in animal embryos grow into every organ the animal needs at birth, according to The Embryo Project Encyclopedia at Arizona State University. Collectively, scientists refer to these...

www.reference.com/science/mesoderm-ectoderm-endoderm-tissue-62b39f5a80cf96e8