Octocorallia

Question 1

Alcyonacea

Answer 1

A taxonomic order within the subclass Alcyonaria — the soft corals.

Question 2

Helioporacea

Answer 2

an order of the subclass Octocorallia that forms massive lobed crystalline calcareous skeletons in colonial corals. These corals first appeared in the Cretaceous period

Question 3

Pennatulacea

Answer 3

an order of Alcyonaria including the sea pens, sea pansies, and related forms that develop a colony which usually resembles a feather, leaf, or club, is often more or less bilaterally symmetrical with the polyps arranged along the distal part of a central axis or on lateral branches and has the basal end of the axis destitute of polyps and embedded in the mud of the sea bottom

Question 4

Pinnules

Answer 4

small, feather like extensions on the tentacle

Question 5

Pharynx

Answer 5

The central opening called a pharynx that functions as the mouth and anus of the organism.

Question 6

Gastrovascular Cavity

Answer 6

the primary organ of digestion and circulation

Question 7

Mesentrial filaments

Answer 7

string-like extensions of the mesenteries

Question 8

Coenenchyme

Answer 8

the common tissue that surrounds and links the polyps in octocorals

Question 9

Solenia

Answer 9

canals that transport fluids between the polyps

Question 10

Axis

Answer 10

the skeletal center of octocorals that is made out of various minerals and proteins.