Planes of cleavage, Biology

Assignment Help:

Planes of Cleavage

The ova of most of the animal groups (except some specific cases like insects) are spherical or nearly spherical having their own actual centre comparable to earth shape. Similar to north and south poles on earth, the egg has animal and vegetal poles. The yolk platelets have more density than active cytoplasm and are concentrated more towards vegetal hemisphere. Therefore, when the egg lies in any fluid medium (the fundamental feature of most of the eggs even in the apparently terrestrial eggs like those of birds etc.), the vegetal pole tends to face the centre of gravity and animal pole away from it.


Related Discussions:- Planes of cleavage

Single stranded conformation polymorphism analysis, This is a broadly used ...

This is a broadly used screening technique that find several genomic mutations in wide number of samples, this technique finds sequence variations because of point mutations or oth

Asexual reproduction, Asexual Reproduction Asexual reproduction is als...

Asexual Reproduction Asexual reproduction is also known agamic reproduction because there is no involvement of gametes in it. Asexual methods of reproduction are

Illustrate bite-wing radiographs, Q. Illustrate Bite-wing radiographs? ...

Q. Illustrate Bite-wing radiographs? The short and long-term evaluation of crestal bone loss around implants is best evaluated with intraoral radiographs. Threaded implants mak

What is blood typing?, What is blood typing? The Blood typing is the de...

What is blood typing? The Blood typing is the determination, by means of tests, of the classification of a blood sample concerning blood group systems (specially the Rh system

How do the availability of water and light affect population, How do the av...

How do the availability of water and light and the climate affect the growth of a population? The availability of water and light and the climate are abiotic factors that limi

What is mass transportation across the cell membrane, Mass transportation i...

Mass transportation is the access or the exiting of substances in or from the cell engulfed by portions of membrane. The fusion of internal substance-having membranous vesicles wit

Diet for cardiac patients, Diet Continue diet as prescribed at hospita...

Diet Continue diet as prescribed at hospital. Some may continue fluid and salt restriction, some may have to restrict iron and Vitamin K rich food stuff. The patient needs t

Cell and molecular, Compare and contrast the effect of a deletion in the op...

Compare and contrast the effect of a deletion in the operator of the lactose operon with one in the operator of the tryptophan operon.

Enumerate about the traumatic brain injuries, Enumerate about the Traumatic...

Enumerate about the Traumatic brain injuries Brain injury is a common result of automobile and industrial accidents and of war injuries. Brain injury can affect brain function

Nucleus, Nucleus - Largest component of the cell. Nucleus is doub...

Nucleus - Largest component of the cell. Nucleus is double membrane bound dense protoplasmic body that controls cellular metabolism, enclose all the genetic information,

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