Gastrulation in some animals, Biology

Assignment Help:

Gastrulation in some Animals

As mentioned before gastrulation marks the beginning of morphogenesis that is development of body form and organisation of cells in the embryo. By the end of this process the groups of cells destined to make different tissues and organs are arranged in their relevant proper positions within the three germinal layers (ectoderm, mesoderm, and endoderm) and the primitive basic body plan of the animal is recognized.

Though, in different groups of animals gastrulation occurs in different ways ascertained mainly by the type of egg and subsequent pattern of cleavage and the structure of blastula. You will study gastrulation as it takes place in echinoderms amphibians, birds and eutherian mammals. The description will help you to understand the difference in the method of gastrulation because of the effect of the amount of yolk and pattern of its distribution in the egg, subsequent pattern of cleavage and the final structure of the blastula.


Related Discussions:- Gastrulation in some animals

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

Digestive system of class asteroidea, Digestive System of Class Asteroidea ...

Digestive System of Class Asteroidea Most asteroids are scavengers or carnivores and feed on snails, bivalves, polychaets, other echinoderms, fish, sponges, sea anemones and p

Explain third mitotic period, Q. What are the major events of the third mit...

Q. What are the major events of the third mitotic period? The third mitotic period is anaphase. In anaphase the following events occur breaking and duplication of centromeres w

Production of organic material for the energetic metabolism, Q. How are bac...

Q. How are bacteria classified as per the production of organic material for the energetic metabolism? Most bacteria are heterotroph they do not produce their own food, there a

Explain the procedure of taking blood pressure, Explain the Procedure of Ta...

Explain the Procedure of Taking Blood Pressure - Explain the procedure to the patient. In case patient is coming for first time to check the blood pressure explain to the patie

What factors are altered when cells are moved, Which factors are altered wh...

Which factors are altered when cells are moved from an in vivo to an in vitro environment, and how do cells respond to these changes?

Of what substance is the plant cell wall made, Q. Of what substance is the ...

Q. Of what substance is the plant cell wall made? Of which monomer is it made? The plant cell wall is made of cellulose. Cellulose is a polymer whose monomer is glucose. There

Vitamins and minerals requirement in chronic diarrhoea, Q. Vitamins and min...

Q. Vitamins and minerals requirement in chronic diarrhoea? Loss of vitamins is related to the degree of mucosal damage in chronic diarrhoea, which in turn impairs absorption an

Define the functions of vitamin e, Define the Functions of Vitamin E? V...

Define the Functions of Vitamin E? Vitamin E is the major lipid-soluble antioxidant in the cell antioxidant defence system and is exclusively obtained from the diet. The main r

Define the nutritional and functional role of iodine, Minerals :- Iodine  ...

Minerals :- Iodine  Food Source      Iodised salt, sea food, plants and animals grown in areas where soil iodine is not depleted. Nutritional Functional role Esse

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