The following points highlight the six main stages of mitosis cell division. The stages are: 1. The Interphase Stage 2. The Early Prophase Stage 3. The Late Prophase Stage 4. The Metaphase Stage 5. The Anaphase Stage 6. The Telophase Stage. 1. The Interphase Stage: The slide shows Interphase stage which is characterized by the following features (Fig. 19). (1) [...]
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 [...]
The below mentioned article provides a diagram of amphiblastula (larva). 1. It is a free swimming larval stage of Sycon and many other calcareous sponges. 2. The body is some what ovoid in form and is comprised of an anterior half of small flagellated micromere cells and a posterior half of large non-flagellated macromere cells. 3. It encloses a small [...]