Cnidarians and Ctenophora

How many species of Cnidaria are there

10,000

Cnidaria mostly leave where

Shallow, warm marine habitats

What is important ecologically, especially in coral reefs

Cnidarians

Cnidocytes are

Stinging cells

Nematocysts are

Stinging organelle

What do Cnidocytes discharge into predator/prey

Nematocysts

Cnidocil are

Modified Cilium

Operculum is the

Cover/Cap

What colonies are more common

Colonial Hydroid Groups

Hydroid colonies are organized as

Branching Stalk

Hydrozoa have both medusa and polyp forms

True

Polyps are produced sexually

False

This class of jellies are fast swimmers

Cubozoa

This class is all polyps and no medusa

ANthozoa

Hexacorallia

Hard Corals; Reef Builders

The skeleton of the class Anthozoa is built with

Calcium Carbonate

This organism lives in class Anthozoa

Zooxanthellae

These are long fuse cilia, rows beat in unison

Comb plates

These are specialized glue cells found in tentacles

Colloblasts

Complete Gut

Two Openings

Comb plates and Colloblasts are found in phylum

Ctenophora