Extraembryonic membranes the same in all vertebrates, Biology

Assignment Help:

Are the extraembryonic membranes the same in all vertebrates?

The presence of each extraembryonic membrane varies according to the vertebrate class.

In fishes and amphibians only the yolk sac is present. In reptiles and birds besides the yolk sac there are also the amnion, the chorion and the allantois. In placental mammals besides all these membranes the placenta is present too.

 


Related Discussions:- Extraembryonic membranes the same in all vertebrates

Carbon paper leaf prints, Carbon paper leaf prints Cover the vein side ...

Carbon paper leaf prints Cover the vein side of a leaf with a very thin layer of lard or vaseline. Place the greased leaf vein side up on various layers of newspaper and cover

What is peri-implant disease, Q. What is Peri-Implant Disease? The term...

Q. What is Peri-Implant Disease? The term peri-implantitis is used to describe the boneloss around an implant. This may be induced by stress or bacteria or a combination of bot

What is the root cap, What is the root cap? The root cap is a protectiv...

What is the root cap? The root cap is a protective structure located in the tip of the growing root. It protects the meristematic tissue of the root forming a cap that surround

What is cytogenetics, What is Cytogenetics? Before the advent of modern...

What is Cytogenetics? Before the advent of modern technology, the American biologists Thomas Hunt Morgan, G.W. Beadle, H. Sturtevant, Barbara McClintock, and others contributed

Explain hair changes - clinical signs of kwashiorkor, Explain Hair changes ...

Explain Hair changes - clinical signs of kwashiorkor? In kwashiorkor, the hair loses its healthy sheen and becomes silkier and thinner. It takes coppery red colour (referred to

Contraceptive methods, Contraceptive methods The safe and easy methods ...

Contraceptive methods The safe and easy methods to prevent pregnancy are called contraceptive methods. i) Contraceptive methods followed by females are : 1) Use of harmon

What is the name of the terminal portion of the axon, What is the name of t...

What is the name of the terminal portion of the axon? The terminal portion of the axon is known presynaptic membrane. Through this membrane neurotransmitters are released into

RNA synthesis, Distinguish features in the mechanisms of RNA synthesis, + (...

Distinguish features in the mechanisms of RNA synthesis, + (RNA), (-) RNA, and ds RNA viruses.

Explain the ethical decisions in nutrition care, Some of  the  situations  ...

Some of  the  situations  that  concern ethical decisions in nutrition care are as follows: Difficulty of adequate nutritional support of malnourished patients, a) A problem

Hypoglycemic effects of dietary factor, Define Hypoglycemic effects of Diet...

Define Hypoglycemic effects of Dietary Factor with antinutritional effect? Of the different carbohydrate foods tested for starch digestibility and blood glucose response, those

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