Polarity in regeneration, Biology

Assignment Help:

Polarity in Regeneration

A distinct polarity or gradient exists in planarians (and in other animals). The meaning of this is that in any piece or segment of the body; its anterior end (head end) represents one pole and the posterior end (tail end) represents another pole. Regeneration is generally correlated with this polarity. In any excised piece the cut surface towards the head end generates a new head and the cut surface towards the hind end produces a tail. In the remaining non-chordate phyla (that is Aschelminthes, Arthropoda and Molluscs) regeneration of missing parts is minimal, and asexual reproduction including regeneration is almost non-existent.


Related Discussions:- Polarity in regeneration

State in brief about the neuropsychological tests, State in brief about the...

State in brief about the Neuropsychological tests Neuropsychological tests have to be constructed using the psychometric approach the interpretation of test performance would n

Push the food down through the esophagus, Q. Which is the kind of muscle ti...

Q. Which is the kind of muscle tissue that helps to push the food down through the esophagus? The esophageal wall in its superior portion is made of skeletal striated muscle th

What are the vessels that carry blood to the kidneys, Q. What are the vesse...

Q. What are the vessels that carry blood to the kidneys? Is this blood venous or arterial? The renal arteries are ramifications of the aorta and so the blood filtered by the ki

The Human Inpact on the Environment, Name the four organisms which are curr...

Name the four organisms which are currently in danger of extinction because of human activities?

What is the phenomenon of the apical dominance in plants, What is the pheno...

What is the phenomenon of the apical dominance in plants? How it can be artificially eliminated? The Apical dominance is the phenomenon by which high (over the positive range l

Explain total parenteral nutrition, Explain Total Parenteral Nutrition OPN)...

Explain Total Parenteral Nutrition OPN) It is a method of providing, complete nutritional support in which  the gastrointestinal (GI) tract is bypassed by introducing assimilab

Illustrate meiosis ii and meiosis i, Q. How many cells are made after meios...

Q. How many cells are made after meiosis II and meiosis I? After meiosis II four cells are created, After Meiosis I two cells with already separated homologous are created

Explain the applications of vitamin B12, Explain the Applications of vitami...

Explain the Applications of vitamin B 12 Cyanocobalamin is used in the preparation of liquid and dry drug formulations of all kinds. In the animal feed industry, usually co

Explain azoles, Azoles Systemic azole antifungals currently available i...

Azoles Systemic azole antifungals currently available in the US contain fluconazole (Diflucan, and others), itraconazole (Sporanox), voriconazole (Vfend) and ketoconazole (Nizo

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd