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!
Metamorphosis
The phenomenon of metamorphosis is described as a process during development which involves a remarkable change in morphology and physiology of the larva, so that it is transformed into an adult with totally different morphology and physiology, often for life in a different habitat. In many such type of animals undergoing metamorphosis, the larva is usually very different from the adult. The best known instances are tadpoles of frogs, caterpillar of butterflies and moths, tadpole larva of ascidians, several larval types of crustaceans, ciliated trochophores of marine annelids and molluscs etc; actually sow times the difference between the larva and adult is so great that with no knowing the origin of the egg, or without following the young one by its full development, it would be next to impossible to know that the young and the adult are of similar species.
In the past such differences have sometimes led to the larva and adult of similar species being assigned to different taxonomic groups. For instance the larva and adult of the axolotl Ambystoma (Urodele - amphibia) and Tribegulians of blister beetle (Inasecta) till quite freshly were mistakenly assigned to different species. Much More than a century ago, only the study of metamorphosis of the tadpole larva of ascidians could decide that the ascidians belong to Phylum Chordata. The changes that take place due to metamorphosis relate often to a change in habitat with a corresponding alter in the organisms structure and other features. For example, in sea urchins, there take place a change from planktonic to benthic existence, in frogs and toads from an aquatic to a terrestrial mode of life and in insects from a non-flying to a flying life.
Inspiration decreases the pressure in the central veins and thus increases the pressure gradient between the peripheral and central veins thus augmenting venous return. Skeletal mu
Mineral availability of organic mineral complexes A number of mineral chelates and complexes are available from a variety of manufacturers. A chelate is described as a metal c
Q. What are persistent organic pollutants (POPs)? The POPs, or persistent organic pollutants, are toxic substances formed from organic compounds. The POPs are made in several i
The human skeleton has evolved from that of four-legged animals. Unfortunately, the adaptation is far from perfect; thus, our upright posture causes problems like backage and the k
Explain about the Calcium and Hypertension? Chronic inadequate intake of calcium may play some role in etiologies of hypertension. Calcium deficiency has been linked to hyperte
Cyclosporine Immunosuppressive agent that is selective for lymphocytes mainly "T" lymphocytes. Route: Oral, parental, dose as prescribed. Side-effects: Ne
Explain about the physiology of eyelid movements. Physiology of Eyelid Movements: It is quoted that the eyelids move more than any other part of the body. The major movem
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
Explain Unresorbable Barriers - Root Perforation MTA exhabits excellent tissue biocompatible non resorbable barrier and restorative material. It represents an extraord
Lymphatic Vessels The function of lymphatic vessels is to aid in the return of interstitial fluid to intra-vascular volume. They assist with transport of lipids from th
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