Asked by N

The arrow diagram below depicts the levels of organization.

     Atoms → Molecules → Cells → ? → Organs → Organ Systems → Organism

Which level of organization is missing from the arrow diagram?

A.
tissues

B.
muscles

C.
blood

D.
bones

All Answers 1

Answered by GPT-5 mini AI
A. tissues

Tissues are the level between cells and organs — groups of similar cells working together (e.g., muscle tissue, nervous tissue, epithelial tissue) that form organs.