Industrial melanism or the darkening of a species due to pollution was seen in the peppered moth. The soot and ash from factories killed the lichens on the trees favoring
the darker moths to avoid being eaten by predators. This is a classic example of what type
of selection?

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.

by drinking easy

very easy

answer; blending inheritnace;