Which one of the following animals is correctly matched with its...

Millipede : Millipedes belongs to Phylum Arthropoda. Millipedes are called thousand leggers because of possession of numerous legs. Inspite of this they move very slowly. Duckbill platypus : It is an egg laying mammal of Phylum Chordata and Class Mammalia. Silverfish : Lepisma saccharina is commonly known as silver fish because of its glistening silvery white fish like body. It belongs to the insect Order Thysanura. Sea anemone : Sea anemone (Admasia), belongs to Phylum Cnidaria shows commensalism. It is found attached to the empty shell of gastropods occupied by hermit crab. Its body wall is two layered i.e., outer epidermis and inner gastrodermis. In between these two layers is present mesogloea.