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!
Bi-Parental Reproduction
In sexually reproducing metazoans, there are separate and distinct male and female individuals. Each has its own reproductive system and produces one kid of sex cell, spermatozoon or egg. Nearly all vertebrates and many invertebrates have separate sexes, and such a condition is celled dioecious and this type of reproduction is called biparental reproduction. However, some animals such as most flatworms, some hydroids, annelids, crustaceans and some fishes have both male and female organs in the same individual. Such a condition is called hermaphroditism. In contrast to the dioecious state of separate sexes, hermaphrodites are monoecious, having both male and female organs in the same organism Most of the hermaphrodites avoid self-fertilization by exchanging germ cells with each other.
For example, although the earthworm bears both male and female organs, its eggs are fertilised by the copulating male and vice versa. Hermaphrodites also prevent self-fertilisation by developing eggs and sperms at different times. If we admit that all living things are mortal, that every living organism is endowed with a life span that must eventually end, then reproduction is indispensable for the continuance of species. During evolution the efficiency of reproduction increased where the parents protect and provide nutrition for the young before or after birth. The adaptations that are found in vertebrates are internal fertilisation, the cleidoic (enclosed in shell) egg, and the foetal membranes. Parallel adaptations are also found in lower animals.
Define Clinical Features and Medical Complications of Anorexia Nervosa? Anorexia nervosa, as we have learnt above, is a disorder characterized by deliberate weight loss, induce
Q. Understanding Behaviour of diabetic patients? Beliefs Each of us has a set of beliefs that were learned by us when we were young. These include religious beliefs and
Q. Of which type of defense cell do worm infections stimulate the multiplication? The main leukocytes that generally participate and multiply in the defense against worm infect
Various proteins are free to take a move laterally in the plane of the bilayer. One experiment used to represent this included fusing cultured mouse cells with human cells under ap
In-vitro studies Mechanistic data might be supplemented by data from in-vitro studies, like as information on genotoxicity derived from reversion assays or other same ass
What are Proteins and Why they are important for us? We just read that proteins are essential for maintaining and sustaining life. What are proteins or what constitutes protein
Q. What is Acid cleaning compounds? Acid-based cleaners like phosphoric acid and hydrofluoric acid are commonly used. They are very useful in removing minimal scales that
Explain Historical Example of connecting models and data? An excellent instance of a program that links theory and data is collaborative work on the population dynamics of flou
Pathophysiology If the ductus arteriosus does not close after birth, the higher pressure in the aorta than in the pulmonary artery causes the blood to flow from the aorta, t
Q. After digestion the next step is absorption done by cells of the mucous membrane of the intestine. For this task a large absorption surface is an advantage. How is it possible i
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