Skip to main content

Posts

Showing posts from September, 2016

Starfish: External Characteristics

STARFISH SYSTEMATIC POSITION Kingdom: Animalia    Phylum: Echinodermata       Class: Asteroidae          Order: Forcipulata             Family: Asteriidae               Genus:   Asterias                  Species:   rubens HABIT & HABITAT: 1.        Asterias is exclusively marine in nature 2.        It is mostly found on sea costs and in shore waters 3.        It generally prefers rocky areas where locomotion and concealment is easier 4.        It is bottom dwelling benthoic organism 5.        It clings to submerged objects by firmly attaching to them. 6.        It is solitary in nature in normal conditions 7.        Asterias is strongly positive towards light whereas other genus are negative towards light 8.        It is carnivorous and voracious feeder 9.        It is nocturnal in nature 10.   It shows remarkable power of autotomy and regeneration EXTERNAL CHARACTERISTICS: A.        SIZE & SHAPE: 1.        Body is star