What body part is most frequently affected by plaque psoriasis in children?

This disease is very common and appears as raised red patches covered with a silvery white buildup of dead skin cells often on the scalp, knees, elbows, and lower back.

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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.

is in the form atp or adenosine triphosphate