Basis of classification (brief account)-:
Locomotion
Nutrition and digestion
Respiration
Mechanism of respiration
Excretion
Trends in Neural Evolution
and Mollusca (Cephalopoda)
Invertebrate larvae
Significance of larval forms
Minor Phyla (Ctenophora,Rhyncocoela,Entoprocta,Rotifera,Bryozoa,Phoronida)
Organization and general characters
Links:
[1] https://zoology.iisuniv.ac.in/courses/subjects/structure-and-function-invertebrates-2
[2] https://zoology.iisuniv.ac.in/academic-year/2016-2017