The term frequency refers to which of the following?

a) the amount of time that passes between waves

b) the number of waves that pass in a given amount of time

c) the distance from the top of one wave to the top of the next wave

d) the distance from the rest position of a wave to the top of the week

The correct answer is option B) the amount of waves that pass in a given period of time

Since Frequency is explained as the magnitude that measures the number of repetitions per unit of time of any phenomenon or periodic event

Explanation:

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.

answer; ///i believe its: ///(embolus);