User:Pooja srivastava/E-Museum/Coelentrata/Some Common Examples/Some Common Examples

= Metridium =

SCIENTIFIC NAME-

Metridium

COMMON NAME-

Sea anemone or Plumose anemons

DISTRIBUTION-

Found on the Atlantic Coast, Northen Pacific coast and Europe.

HABITAT-

It is marine in nature and found attached to the rocks and solid objects from tide pools to a depth of 90 fathoms.

IDENTIFYING FEATURES-


 * Body is cylindrical and divisiblle into 3 distinct reagions, pedal disc, column and oral disc.
 * The body size may vary from few centimeters to 1 meter.
 * Pedal disc (foot) helps in attachment with substratum.
 * Column is diffrentiated into two portions-Capitulum(thin walled ) and Scapus(thick walled).The wall of scapus is perforated by small openings called cinclides.
 * Mouth is surrounded by numeros tentacles.

GENERAL CHARACTERS-


 * Mouth opens into gastrovascular cavity via a short gullet.
 * Sea anemones are predaceous, immobilizing their prey with the aid of specialized stinging cells called nematocysts.
 * Sea anemones feed on small planktons.
 * Sexes are separate.Gonads are present on mesentries.