Systems is the highest level of cellular organization in the multicellular organisms.
Further Explanation:
A cell is the structural and functional unit of the living organisms which contains various cellular organelles to carry out different functions of a cell. A group of cells that has similar structure and function is called as tissues and a group of one or more types of tissues combine to form an organ. A system is formed by group of organs which function in a coordinated form.
Muscle cells, nerve cells, bone cells, blood cells, pancreatic cells, fat cells, endothelial cells are some of the types of cells with varied structure and function. The four different kinds of tissues are connective tissue, nervous tissue, muscle tissue and epithelial tissue. The different kinds of organs are liver, kidney, skin, heart, brain and lungs. The different types of organ systems are skeletal system, muscular system, circulatory system, digestive system, reproductive system, urinary system, nervous system, respiratory system, lymphatic system, endocrine system and integumentary system.
A group of organ system functions to form a multicellular organism like human beings.
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Answer Details:
Grade: Middle School
Subject: Biology
Chapter:The cells and the cell organelle
Keywords:
Cell, organ, system, tissue, kidney, liver, heart, lungs, skeletal system, muscular system, circulatory system, digestive system, reproductive system, urinary system, nervous system, respiratory system, lymphatic system, endocrine system and integumentary system.