In this article we will discuss about the features and classification of ctenophora. Salient Features of Ctenophora: 1. Body bi-radially symmetrical. 2. Presence of eight meridional rows of ciliary plates (comb plates). 3. Absence of cnidocytes. 4. Presence of adhesive cells (colloblasts) in the tentacles. 5. Mesenchymal muscle cells present in the mesoglea between the ecto- and endoderm layers. 6. [...]
In this article we will discuss about:- 1. Structure of Hormiphora 2. Enteron or Gastro Vascular System in Hormiphora 3. Histology 4. The Nervous System 5. Reproductive System 6. Development. Contents: Structure of Hormiphora Enteron or Gastro Vascular System of Hormiphora Histology of Hormiphora The Nervous System of Hormiphora Reproductive System of Hormiphora Development of Hermiphora 1. Structure of Hormiphora: [...]
In this article we will discuss about the similarities and dissimilarities between ctenophora and cnidaria. Similarities between Ctenophora and Cnidaria: 1. Biradial symmetry. 2. Simple organisation—lack of organ- systems. 3. Arrangement of different structures in oral-aboral axis. 4. Presence of branched coelenteron. 5. Presence of gelatinous mesoglea. 6. Net type nervous system. 7. Presence of statocyst (sense organ). Dissimilarities between [...]