In this article we will discuss about the preparation of permanent mounts of various organisms. 1. Euglena: Living Euglena, for study, may either be collected from a patch of stagnant water having decaying green leaves or may be obtained from cultures in laboratory. For purpose of study in the living condition take a few euglena in a dropper or a [...]
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 [...]
In this article we will discuss about the spicules and gemmule of sponge. Spicules of Sponge: 1. The spicules are structures which form the supporting skeleton in sponges. 2. They may be either calcareous or silicious in nature. 3. They may be either monaxon (having one ray) triaxon (having 3 rays) or tetraxon (having 4 rays). 4. Some times they [...]