How does transportation takes place in hydra
Answers
Explanation:
Hydra live in water and don't have blood or circulatory system. Water act as a source of food of hydra and is also responsible for removal of extra waste material from the body. Transportation takes places from cell to cell (through simple diffusion ).
hydra is 2-3 mm in length and is about half mm in diameter, so it is large enough to be seen. It has no specialized transport system. Nearly every cell of hydra is adjacent either to the outside pond water or to the water in the digestive cavity. Movement and absorption of digested food is by diffusion.
The body wall of Hydra is organized as an epithelial bilayer (ectoderm and endoderm) with an intervening extracellular matrix (ECM), Molecular and biochemical analyses of Hydra ECM have established that it contains components similar to those seen in more complicated vertebrate species. These components are synthesized in a complicated manner involving cross-talk between the epithelial bilayer. Any perturbation to ECM biogenesis leads to a blockage in Hydra morphogenesis. Blockage in ECM/cell interactions in the adult polyp also leads to problems in epithelial transdifferentiation processes. In terms of biophysical parameters, Hydra ECM is highly flexible; a property that facilitates continuous movements along the organism’s longitudinal and radial axis. This is in contrast to the more rigid matrices often found in vertebrates.