Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Locomotion in Echinodermata
Locomotion in echinoderms is accomplished through a unique canalicular system which is termed as the water-vascular system. This system is characteristic of echinoderms, in most of that it is quite well developed. It consists of a series of canals derived from the coelom. The canals consist of a fluid. Sea water has free access to the system via a perforated sieve plate called the madreporite on the aboral side of the animal. The fluid is much more like seawater but has a high content of potassium ions. Some proteins and several types of amoebocytes float in it. The structural organisation of the water-vascular system is chiefly the same in all echinoderms, though deviations from the basic plan occur. To study the components of the system, we might take the water-vascular system of the star-fish, as typical example. Its main component applicable from the point of view of locomotion consists of a pentagonal circumoral vessel that is termed as the ambulacral ring canal. From the ring canal are given off five radial vessels. Every radial canal extends up to the tip of the arm. It gives off a large number of side vessels along its course. Each side vessel leads into a tube-foot or podium, which is a hollow conical or cylindrical process with an ampulla and a terminal sucker. A Valve is present at the junction of lateral vessel with the tube-foot.
why is it necessary to classify living organisms ? what are the advantages of classifying organisms?
Q What are the retroviruses? How do they reproduce and what is the role of the enzyme reverse transcriptase? Retroviruses are viruses whose genetic material is RNA, HIV and the
Define Regulation of Water Balance - Hormonal Control of Fluid Balance? Hormonal control of fluid balance: When water intake is insufficient or water loss is excessive, the kid
What are some factors that can lead to protein denaturation? Protein denaturation can be caused by temperature variation, pH change, alters in the concentration of surrounding
Mr. Jones I.V. was hung at noon. It is a liter bag and is infusing at 65 ml/hr. How many hours will this bag last?
Minerals :-Copper Food Source Organ meats, sea foods, nuts, seeds Nutritional Functional role Essential nutrient: Deficiency is rare. Catalyst: Lipid perox
What is Class Crinoidea? This Class includes the sea lilies and the feather stars. What makes them different from the other Echinoderms is the placement of their mouth and anus
The PCR (polymerase chain reaction) is a biochemical technology in molecular biology to intensify a one or a little copies of a piece of DNA across several orders of magnitude gene
Functionality of CMC CMC is soluble in cold water and mainly used for controlling viscosity without gelling. As its viscosity drops during heating, it may be used to improve t
Automated DNA sequencing is now common place which is based on the chain termination method but using a fluorescent dye attached to an oligonucleotide primer instead of using radio
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd