Eggs of hen, Biology

Assignment Help:

EGGS OF HEN

  • It is a meiolecithal egg which is oval. The animal pole is found in the form of a small germinal disc.
  • The vegital pole has two types of yolk viz. White yolk & Yellow yolk.
  • The white & yellow yolk are found in alternate concentric rings. The outermost ring is of white yolk.
  • The central part of the vegital pole is flask shaped & contain white yolk. It is called as Latebra. The narrow part of the latebra is called as neck of latebra.

2423_eggs of hen.png

  • The white yolky region just below the germinal disc is called as nucleus fo pondar.
  • The yellow yolk is more viscous than the white yolk.
  • The innermost egg membrane is vitelline membrane which is followed by a chalazeal layer. The chalaza membrane form chalaza on both the sides. The chalaza is a spiral cord which always keeps the germinal disc upside.
  • The chalazeal layer is followed by three layers of albumin which are called as inner, middle & outer layer of albumin. The middle albumin layer is comparatively thicker.
  • There are two shell membranes outside the albumin layers which are called as outer & inner shall membranes. Both the shell membranes remain fused except in the broad region where they enclose an air space. The O2 present in the air space is used by the embryo during emergency.
  • The outer most egg membrane covering is called as shell which is madeup of CaCO& it is porous. It is permeable to gases but impermeable to water.
  • The oviduct of hen consists of three parts viz. magnum, isthmus & uterus.
  • The magnum secretes chalazeal layer & albumin layers.
  • The isthmus secrets the shell membranes.  The shell glands of the uterus secrete the shell.

Related Discussions:- Eggs of hen

DIGESTION, GIVE ADETAILED ACCOUNT OF THE VARIETY OF FUNCTIONS PERFORMED BY ...

GIVE ADETAILED ACCOUNT OF THE VARIETY OF FUNCTIONS PERFORMED BY THE LIVER

Find no. of pair of alleles involved polygenic inheritance, How to find the...

How to find the number of pair of alleles involved in polygenic inheritance using the number of phenotypical forms of the trait they condition? Considering the "p" number of th

Which features shared by typical birds and mammals, Which of the following ...

Which of the following characteristics is not shared by typical birds and mammals? A) Four chambered heart B) Milk production C) Four limbs D) Endothermy E) Insulating skin structu

Detailed explanation of effects of air pollution, On living organism  ...

On living organism           Air pollution causes following effects on living organism: (a)   Effects on humans: 1.      Carbon monoxide reduces the oxygen carrying cap

What is ancylostomiasis, What is ancylostomiasis? Ancylostomiasis is a ...

What is ancylostomiasis? Ancylostomiasis is a disease caused by Ancylostoma duodenale or Necator americanus, both hookworms belonging to the nematode phylum (roundworms). Ancyl

Parasitic diseases - fascioliasis, P a r a s i t i c Diseases ...

P a r a s i t i c Diseases F a s cioliasis It is a liverfluke infestation characterized by hepatic insufficiency, bile duct obstruction, and poor production per

What is the way of life of sponges, Q What is the way of life of sponges? ...

Q What is the way of life of sponges? Sponges live exclusively in an aquatic environment and they are attached by their base to a substrate fixation ground. Sponges are filteri

Explain tools of satellite dna, Satellite DNA is useful tool in: 1. Org...

Satellite DNA is useful tool in: 1. Organ transplantation 2. Sex determination 3. Forensic science 4. Genetic engineering Forensic science

Products of cleavage - morula and blastula, Products of Cleavage (Morula an...

Products of Cleavage (Morula and blastula) In several cases, the blastomeres in early cleaving stages tend to presume spherical shape like that of the egg earlier than cleava

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