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

Biological conduits, Biological Conduits : Freeze dried arterial, bov...

Biological Conduits : Freeze dried arterial, bovine MA, human umbilical vein, cryo preserved umbilical vein or artery and omniflow sheep collagen tube grafts also have poor

Water and carbon dioxide towards the consumption of product, Q. What are th...

Q. What are the consequences of shifting the chemical equilibrium of the formation of bicarbonate from water and carbon dioxide towards the consumption of products of the reverse r

Role of nacl in metabolism, ROLE OF NaCl - It forms .9% of blood of ...

ROLE OF NaCl - It forms .9% of blood of mammal. It forms .7% of blood of frog. Bicarbonates of Na+ act as buffer for pH constancy. Involved in active transport of gluc

Define carbohydrate metabolism of manganese, Define Carbohydrate Metabolism...

Define Carbohydrate Metabolism of manganese? Mn is required for carbohydrate metabolism. Enzymes pyruvate carboxylase and phosphoenol pyruvate carboxy kinase involved in glucon

What are the limits of pest control, How could knowledge of a pest organism...

How could knowledge of a pest organism's tolerance limits be used in pest control? Pesticides could be developed that make those limits narrower, environmental conditions could

Explain how inhibition might contribute, We now understand that mutations t...

We now understand that mutations that cause the inhibition of apoptosis are found in tumors. Because proliferation itself is not induced by the inhibition of apoptosis, explain how

Extractive use of biodiversity, Q. Extractive use of biodiversity? This...

Q. Extractive use of biodiversity? This includes direct use such as harvesting of wild plant species for use as food, fuel, fodder, fibre, shelter or medicine and hunting anima

Unit membrane model, structure explanation of unit membrane model

structure explanation of unit membrane model

Secondary and the primary constrictions of a chromosome, Q. What are the se...

Q. What are the secondary and the primary constrictions of a chromosome? And what is the other name given to the secondary constriction? Primary constriction is the narrower re

Disease has a high morbidity and low mortality, The disease has a high morb...

The disease has a high morbidity and low mortality Genital disease: Affected cow develop fever, depression and stand apart, with tail held away from vulva, urination is freq

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