While gardening. omer accidently damages the stem of a plant in his garden what plant process has omer directly affect A) Photosynthesis
B)reproduction
C)transpiration
D)transportation of water and food and nutrients
*i need this fast please*

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.