Ow are proteins and nucleic acids related? They both provide energy.
They both carry genetic information.
The structure of proteins is determined by nucleic acids.
The subunits of nucleic acids are also the subunits of proteins.

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.

to this answer it would be edge enhancement