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.
Determine the Binocular movements Binocular movements are those when the relative movements of both eyes are studied together in the directions, e.g., right or left. There are
Pseudopodia – Protozoans Pseudopodia are flowing cytoplasmic protrusions of the cell causing amoeboid movement. In protozoans pseudopodia exist in several forms. The most fami
Q. Vitamins requirement in dyslipidemia? Antioxidants and flavonoids, natural vitamin E, vitamins C and Aare nutrients (vitamins) that scavenge cell-damaging free radicals and
Q What is the function of the skin in humans? The skin is the external covering of the body. In humans its major functions are protection and perception of information from the
Excretion in Animals Excretion is concerned along with the removal of metabolic wastes that arise as a result of oxidation of energy rich compounds and metabolism of proteins
THYMU S GLAND Flat, bilobed gland located in the mediastinal space in front of heart. Well developed in new born child and grows upto puberty but starts degenerating the
How plants use the pattern of changes in day/night length to solve the paradox that day length is equal twice a year. Plants possess the ability to balance the daily changes in
Q. Investigation of aortic regurgitation by Serial Testing? Serial testing is indicated in asymptomatic patients with severe AR and preserved LV function since LV dysfunction m
excretory organs of different animals from protozoa to mammals
Explain the Spectrophotometer or Colorimete? These can be used to measure the microbial growth or can be used in various microbial and biochemical assays. Figure illustrates t
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