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!
Metameric segment - Segmentation
On the other hand true metameric segment as best observed in annelids has separate schizocoelic body cavity of mesodermal origin in each segment. Individual segments are budded off in linear sequence from a proliferation region just in front of the posterior end. Segmented animals have a specialized anterior acron (prostomium) and posterior pygidium or telson both of which are not segments. In between there are a varying number of segments.
In near perfect segmentation, appendages, musculature, ganglion, nerves, blood vessels, coelom and all body organs are replicated in each segment. This arrangement is best seen in annelids. In chordates, segmentation is usually apparent in the axial skeleton. Muscles and nerves. Why did segmentation evolve in animal groups? What advantages does it confer on the animals in which it is seen? Let us examine this a little closely. The most important advantage is that segmentation divides a body into a series of compartments, each of which can be regulated almost independently. This in a way provided the framework for specialization. In colonial animals this specialization is seen in polymorphism of zooids while in segmented animals regional specialization of segments occurs.
Sea weeds Besides lakes, rivers and ponds, India has two thousands kilometers long coastline and wide variety of aquatic plants are abundantly available which are regarded mor
Select all that are true/correct: Cellular respiration consists of the production of ATP in several steps using enzymes. Photosynthesis produces carbohydrates using carbon dioxide
Carbohydrates are the next important nutrients as they have to perform a variety of functions such as: 1) Provide major source of energy 2) Breakdown of fatty acids and preve
Gill slits are the opening or the clefts between the gill arches in the fish. Water taken in by the mouth passes through the gill slits and bathes the gills. It also has rudimenta
Describe Valvar Aortic Stenosis Murmurs ? Characteristic: Harsh, rasping crescendo-decrescendo murmur best heard anywhere in a straight line from right 2nd ICS to apex ("sash"
Explain solid salt and saturated aqueous solution? In this example, the equilibrium system consists of crystalline PbCl 2 and an aqueous phase containing the species H 2 O, P
What are the results of Atrial Septal Defect ? Mortality for ASD closure has approached 0 per cent in most cardiac surgery centers. Late survival of patients who has ASD closu
HISTORY ON CLASSIFICATION IN BIOLOGY
Development of Nutritional Biochemistry Nutrition, in general, and particularly nutritional biochemistry, has traveled a long way since 1926, when nutrition was first reco
Define the Sphingolipid Metabolism - Vitamin K? Sphingolipids, as you would recall from your Biochemistry Course, are a class of membrane lipids that are composed of one molecu
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