Which of the following is the most complex according to their cellular level of organization? by Sunday | Sep 6 | Biology JAMB | 0 comments A. Heart B. Hair C. Euglena D. Hydra Correct Answer: Option A – Heart Users Also Read These:Which of these has the most complex level of organization?The process of transforming the chemical energy of…Cellular respiration occurs in the?Give TWO advantages of complex structural…Which of the following represents the correct…