PHYLUM – ARTHROPODA

Phylums and related characteristics are given below . Choose an appropriate option which fills the blank spaces . {:("PHYLUM/CLASS","EXCRETORY ORGANS","CIRULATORY ORGANS","RESPIRATORY ORGANS"),("1 Arthropoda",A,"Open","Trachae"),("2 B","Metanephridia","Open","Gills"),("3 Amphibia",C,"Closed",D):}

Classification Of Animals|Phylum - Nematoda|Phylum - Annelida|Arthropoda|Mollusca|Echinodermata

Give the general characters of the phylum Annelida or Arthropoda

Phylum-Echinodermata || Phylum-Hemichordata Phylum-Chordata