A Portuguese man o’ war is an invertebrate with radial symmetry and tentacles. It is related to and looks like a jellyfish. It is most likely a
A
sponge.

B
mollusk.

C
cnidarian.

D
arthropod.

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.