Which is the best description of photophosphorylation?
the absorption of light energy by chlorophyll
the conversion of light energy to chemical energy
the removal of a phosphate group from a molecule
the conversion of adp to atp using light energy

The answer is the conversion of ADP to ATP using light energy. Photophosphorylation occurs in the light stage of photosynthesis. There are two types of photophosphorylation; cyclic and non-cyclic. In cyclic (which occurs only in bacteria), only photosystem I is utilized in the process while in non-cyclic, both photosystems I and II are used. In non-cyclic photophosphorylation, in addition to ATP, NADH is also synthesized.

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.