Question

Anchorage meaning related to cnidoblasr

Answer 1

 

A genus of small, freshwater cnidarians (coelenterates) which belong to the class Hydrozoa. Hydra attach themselves to submerged rocks, leaves, and twigs, and stretch out their tentacles, or cnidae, to capture passing prey. Unlike most hydrozoa, which spend at least part of their lives in a free-swimming form, Hydra exists only as polyps. They are typically a few millimeters long.

Single opening for ingestion and egestion Radial symmetry exhibited Sedentary polyp forms which may be solitary or colonial; medusoid forms, free swimming and solitary. Nervous system is a collection of cells forming an irregular net or plexus. Asexual reproduction by budding or strobilation Sexual reproduction produces characteristic planula larva Polymorphism exhibited, but most individuals reducible either to hydroid or medusoid type. They are aquatic, mostly marine, sessile or free-swimming, radially symmetrical animals. The name cnidaria is derived from the cnidoblasts or cnidocytes (which contain the stinging capsules or nematocytes) present on the tentacles and the body. Cnidoblasts are used for anchorage, defense and for the capture of prey. Cnidarians exhibit tissue level of organisation and are diploblastic.