Most mutations that cause cancer occur within body cells, and body cell mutations are not inherited. if cancer is not inherited, why does cancer statically appear to run in families? a. family members have similar genetic make-up that may make them predisposed to cancer. b. family members are exposed to similar environmental conditions. c. family members have a widely varied genetic make-up that can be affected by specific mutagens. d. family members share the contagious mutagens that can be passed by close exposure.

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.

i do not know and i have a 100 in this class

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.