1.

Which one of the following represents the correct level of organisation ranging from simplest to most complex?

A. Cells Tissues  Organs  Organ systems  Organisms
B. Tissues  Organs  Cells  Organisms   Organ system
C. Baking of chapati.
D. Cells  Organs  Tissues  Organ systems  Organisms
E. None of these
Answer» B. Tissues  Organs  Cells  Organisms   Organ system


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