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!
Excretion in Non-Chordates
Excretion as described under Introduction of this unit refers to removal of the waste products of metabolism - carbon dioxide (CO2) and water released by the oxidation of energy rich compounds and the nitrogenous wastes released through the metabolism of proteins and nucleic acids. Though, we will here limit ourselves to elimination of nitrogenous waste. In small ones, particularly aquatic ones, simple diffusion from body surface plays a significant role in elimination of nitrogenous wastes. Even in larger aquatic animals some diffusion occurs from body surface, but they have evolved specialised organs for excretion, which play the main role in elimination of nitrogenous waste material. However, it has to be remembered, that many of these organs serve basically osmoregulatory function rather than excretory. Well described excretory organs are seen from the pseudocoelomate animals onwards. Several groups of metazoans have nephridia as excretory organs. A nephridium develops from the ectoderm centripetally. The lumen of the nephridium is formed by using the hollowing out of nephridial cells. Thus nephridia are intracellular. In primitive animals this lumen is closed internally but subsequently attains an opening into the coelom. The opening is termed as nephridial funnel or nephrostome. Its opening to the outside is by nephridiopore.
Q. 2-Dimensional Echocardiography constrictive pericarditis? Thickened pericardium can be detected. In about a third of patients there will be associated some degree of perica
Explain Food lipids It is either consumed in the form of "visible" fats, which have been separated from the original plant or animal sources, such as vegetable oil and butter,
Define Endurance capacity by standard running tests? Endurance capacity, on the other hand, is measured by standard running tests in which time to exhaustion is taken as the en
CUTIN It is a lipid formed by polymerization and cross-esterification of hydroxy fatty acids. Cutin occurs inside outer epidermal walls of plant surfaces as bringing agent t
Define Recommended Dietary Allowance for riboflavin (RDA)? Several nutritional and physiological factors govern riboflavin requirements. Negative nitrogen balance reduces rib
Medical and First Aid - Factors Affecting Occupational Health Depending on the type of work the industry must make arrangement for readily available medical facility. A nearby
The type of gene interaction in which effects of one gene override or mask the effects of other entirely different genes is known as: a) Mutation b) Linkage c) Pleitropy
DEFICIENCY DISEASES Animals may suffer from diseases caused by deficiencies of energy and proteins, mineral nutrients and vitamins, which generally occur either due to deficiency
please enlighten me on proteins and forensics
Q. Diagnosis of diabetes mellitus? Timely and proper diagnosis plays a key role not only in identifying new cases but also in managing old cases with or without diabetic compli
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