Describe the location and function of the following structures in Phylum Coelenterata:
$(i)$ Tentacles
$(ii)$ Hypostome

(N/A) $(i)$ Tentacles:
Location: In Coelenterata (Cnidaria),the mouth is surrounded by many thin,long,slender,and hollow structures known as tentacles.
Function: They are used for capturing prey,paralyzing prey using cnidoblasts,attachment to surfaces,and for defense and offense.
$(ii)$ Hypostome:
Location: It is a conical,elevated structure located at the center of the oral end of the body,bearing the mouth at its apex.
Function: It acts as the mouth-bearing region and helps in the ingestion of food.