One function of the hematic system is to
cause voluntary and involuntary motion
protect the body
transport substances in the body
distribute blood through the body

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.

the median of the data is 4.5.

the answer is: metamorphic rocks often show the presence of fossils, also a

hope i

-lavira: )