The important topics of animal kingdom class 11 NCERT are:

• Basis of Classification
  
• Levels of Organisation
• Symmetry
• Diploblastic and Triploblastic Organisation
• Coelom
• Segmentation
• Notochord
• Phylum – Porifera
• Phylum – Coelenterata (Cnidaria)
• Phylum – Ctenophora
• Phylum – Platyhelminthes
• Phylum – Aschelminthes
• Phylum – Annelida
• Phylum – Arthropoda
• Phylum – Mollusca
• Phylum – Echinodermata
• Phylum – Hemichordata
• Phylum – Chordata