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

Admission to the hospital - nursing, Admission to  the Hospital The ...

Admission to  the Hospital The  philosophy of  childcare, whether in the home, hospital, or  other community agency, should be consistently one of concern and support for the

Open water zone - lake ecosystem, Open Water Zone - Lake Ecosystem Thi...

Open Water Zone - Lake Ecosystem This extends beyond the littoral zone and is too deep for light to penetrate till the bottom and for rooted plants to grow. This zone is divid

Respiration, lesson plan practical requirements

lesson plan practical requirements

Describe the concept of gastrulation, Describe the concept of gastrulation?...

Describe the concept of gastrulation? During embryological development this stage results in blastulas conversion into a gastrula. Cells migrate toward the inside of embryo fro

What is structural formula of glycerol, Q. What is structural formula of gl...

Q. What is structural formula of glycerol? To which organic function do these molecules belong? Glycerol is a linear chain of three carbons, the central carbon is bound to one

Define the guidelines for calculating ideal body weight, Define the Guideli...

Define the Guidelines for Calculating Ideal Body Weight? What is the ideal body weight for me? Am I obese? Am I underweight? These are the questions that must have come to your

Multiple replicons , In the eukaryotes replication of chromosomal DNA happe...

In the eukaryotes replication of chromosomal DNA happens only in the S phase of the cell cycle. As for bacterial DNA, eukaryotic DNA is replicated     figure: The euk

What is the approximate number of amino acids, What would be the approximat...

What would be the approximate number of amino acids of a protein with a mass of 203 kd? Assume an average molecular weight for amino acids of 110 grams/mol.

What is molecular biology, Molecular Biology Transgenesis: pro-nucl...

Molecular Biology Transgenesis: pro-nuclear injection of isolated gene into fertilised egg cell, cell divides to form embryo, then embryo implanted into surrogate.

Reciprocal crosses , RECIPROCAL CROSSES Similar results were obtained w...

RECIPROCAL CROSSES Similar results were obtained with reciprocal crosses also. A reciprocal crosses involves the same traits but carried by sexes opposite to those in the origi

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