In this article we will discuss about the anatomy of sycon. L.S. of Sycon: Fig. 93. L.S SYCON 1. Body wall is diploblastic with an outer ectodermal or dermal epithelial layer and inner gastric epithelial layer or endoderm. 2. Non-cellular mesenchyme layer with interspersed monaxon and triaxon spicules is present in between the two layers. 3. The dermal epithelium is [...]
In this article we will discuss about the T. S. body and parapodium of nereis. T. S.Body of Nereis: Fig. 127 T.S NEREIS 1. It is the slide of T. S. of Nereis. 2. The body wall is comprised of a' outermost thin cuticle, a layer c epidermis and a thick layer of circular muscles. 3. The longitudinal muscles are [...]
In this article we will discuss about the T.S. book lung of scorpion with the help of diagram. Fig. 156 BOOK-LUNG OF SCORPION 1. This is a slide of T.S. of book lung of an arachnid (Scorpion). 2. The book lungs are respiratory organs and are always in pair. 3. Each book lung is comprised of numerous (100-130) leaflets arranged [...]