Ajellyfish is a type of cnidarian, a squid is a type of mollusk and a dolphin is a type of vertebrate which two characteristics are present in both a squared and a dolphin but not present in a jellyfish

Ans.  

Jellyfishes are multicellular, marine organisms that belong to phylum Cnidaria. Squids are a type of mollusks, having eight arms and tentacles. Dolphin is a vertebrate that belongs to class mammalia. They produce young, have fur or hairs on the body and complex organ system.

Both squid and dolphin have complex organ systems, nervous system, while complex organ systems are absent in jellyfish.

Both squid and dolphin are triploblastic (having three tissue layers), while jellyfish is diploblastic (having two tissue layers).

thymine. in rna, thymine is replace by uracil

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.