26:28

Ctenophora | Phylum Ctenophora | Characters and classification of Ctenophora

55:22

Platyhelminthes | Phylum Platyhelminthes | general characters and classification of Platyhelminthes

44:57

Porifera | Phylum Porifera | Porifera General characters and Classification | Sponges

14:19

Phylum Cnidaria (Coelenterata) General characteristics.

30:43

Protozoa classification | classification of protozoa | Protozoa | Honigberg Classification

9:42

Polymorphism in Cnidaria with theories

34:28

Phylum Mollusca | Mollusca | General Characters of Phylum Mollusca | Classification of Mollusca

47:47

Neurochemical technique of Animal Behavior | Methods of studying behaviour | neurochemical technique