Define hierarchy/level of organisation in the body and identify the order of pyramid tiers

Hierrachy or level of organisation in human being refers to the arrangement of biological structures from simplest to most complex.

The order of pyramid tiers are:

Cells- tissues- organs- systems- organisms.

Explanation:

Hierrachy refers the order arrangement of biological

structures from simplest to complex.

Cells refer to basic unit of life.

Tissues comprises of cells which perform specific functions. E.g epithelial tissues.

Organs refers to several tissues that join to form organs. E.g Heart, lungs.

Systems comprises of several organs. E.g digestive system.

Organisms are comprises of many body systems.

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