Are prokaryotes more common than eukaryotes

yes

Explanation:

they can produce way quicker

Yep.

Explanation: Prokaryotes are more common, hope im not too late lol

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.

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;