5.Which of these is an example of the body where homeostasis is maintained?
A. The pH level of urine drops, causing a crystal formation. This leads to blocking of
urine and urine infection
B. The pH level of blood drops due to excess amount of CO2. The brain sends signal to
the diaphragm to increase breathing in order to get rid of excess CO2
C. The excess amount of allergens in the air causes inflammation in the lungs. This
makes breathing difficult
O D. Pelvic floor dysfunction causes stool to dry out. This leads to constipation.

i believe its B.)  The pH level of blood drops due to excess amount of CO2. The brain sends signal to

the diaphragm to increase breathing in order to get rid of excess CO2

Explanation:

i hope this helps

im really sorry if its wrong

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.

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