WebSep 23, 2024 · Sponges consist of an outer layer of flattened cells and an inner layer of cells called choanocytes separated by a jelly-like substance called mesohyl. The mesohyl contains embedded amoeboid cells that secrete tiny needles called spicules or protein fibers that help give the sponge its structural strength. WebApr 19, 2015 · • Body Symmetry: • Most sponges have asymmetrical bodies. • Cnidarians have radially symmetrical bodies. • Cell Types: • Sponges have few types of cells. • Cnidarians have a wider range of cell …
Difference between Sponge and Hydra - BYJU
WebDec 11, 2015 · There are three different body plans found among sponges, and they are depicted in Figure below. The main difference between each body plan is the complexity … WebCertain animals, particularly most sponges and the ameboid protozoans, lack symmetry, having either an irregular shape different for each individual or else one undergoing constant changes of form. The vast majority of … team champs 2023
15.2 Sponges and Cnidarians - Concepts of Biology
WebThe types are: 1. Spherical Symmetry 2. Radial Symmetry 3. Bilateral Symmetry. Type # 1. Spherical Symmetry: In this type of symmetry, the body of the individual can be divided into similar halves by any plane passing through the centre, e.g. Volvox, some sponges and some corals. Type # 2. Radial Symmetry: WebTherefore, sponges lack true tissues and organs; in addition, they have no body symmetry. Sponges do, however, have specialized cells that perform specific functions. The shapes of their bodies are adapted for maximal efficiency of water flow through the central cavity, where nutrients are deposited, and leaves through a hole called the osculum. WebApr 19, 2015 · Sponge body is composed of two layers; outer flattened cell layer and inner flagellated collar cell line, which opens to its internal cavity. In between these two cell layers, there is a gel-like extracellular matrix. … teamchamps login