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Question

Which of the following forms the highest level of organisation?

A

Organ

B

Cell

C

Tissue

D

Organ system

Easy

Solution

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Correct option is
D

Organ system

  • The cell is the smallest structural and functional unit of life. 
A group of cells with similar functions and common origin forms the tissue. A collection of tissues forms the organ and performs a similar function. An organ system is a group of organs that work together to perform one or more functions. 
Thus, the highest level of organization is the organ system.

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