The energy that animals need for their life functions is released when their cells carry out which of the following functions?
Breaking down carbon-based molecules
Absorbing water from the environment
Moving molecules across membranes
Eliminating waste products

i'm pretty sure it's spores

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.

life would be meaningless without memes