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.
Signify the term - Analogy, Analogous? Refers to structures that do not have the same evolutionary origin but have the same functions. The wings of a bat and insect are analogo
Changes in Animal Life during Xerosere Just like the hydrosere, there occur successive changes in animal life during the xerosere. A few mites are usually found associated wi
FUNCTIONS (1 ) Intracellular digestion - Individual cells may obtain food through phagocytosis. The same is digested with the help of lysosomes. It is of two types:-
What is meant by suction force of the plant cell? Does the suction force facilitate or make difficult the entrance of water into the cell? As the vacuolar solution is hypertoni
Explain Nutritional assessment and Guidance in Prenatal Care? In the preceding sections, we have seen that there are unique physiologic changes in the pregnant woman's body, wh
Why should Posterior wall preffered during surgery Posterior wall should not be perforated during surgery. This limits bleeding from the pterygoid plexus or branches of the max
Explain the Impedance method to Measure Body Fats? Impedance method: This method can give entire body composition like total body water (TBW), fat free mass (FFM) or lean body
What are differentiations of the cell membrane? In some types of cells, the cell membrane presents differentiations that are essential for the specific functions of the cells.
Q. Clinical manifestations of maple syrup urine disease? Clinical manifestations are expressed upon protein loading or with febrile illness. In most severely impaired enzyme de
For Dalmation dog, the spotted condition is dominant to non-spotted. a) Using a Punnet square, show a cross between two heterozygous parents. b) A spotted female Dalmation dog is m
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