Tissue-organ level structure is found in which phylum?
সঠিক উত্তরঃ
A.
Platyhelminthes
Explanation: Remember: Cellular level of organization→ Porifera
Cell-tissue level of organization → Cnidaria
Tissue- organ level of organization → Platyhelminthes
Organ-system level of organization → Nemertean
[Gazi Azmal Sir: Edition-2022, Page-03]