Question 5
Cell Structure and OrganisationWhich of the following is the most complex according to their cellular level of organization?
- A.Heart.
- B.Hair.
- C.Euglena.
- D.Hydra.
Show the answer and explanation
Answer: A (Heart.)
Explanation
The heart is an organ made of several tissues, the highest level here. Euglena is a single cell and Hydra is at the tissue level.