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

What are the plant cell vacuoles, Q. What are the plant cell vacuoles? And ...

Q. What are the plant cell vacuoles? And what are their functions? And what is the covering membrane of the vacuoles called? Plant cell vacuoles are cell structures delimited b

Nutrition, prove oxygen is produced during photosynthesis in the presence o...

prove oxygen is produced during photosynthesis in the presence of light

Endosperm with lateral haustoria, Endosperm with Lateral Haustoria In...

Endosperm with Lateral Haustoria In Monochoria, in which the endosperm development is of helobial type, the haustorium is neither chalazal nor micropylar but lateral. The cha

Biota of littoral zone, Biota of Littoral Zone This zone is the shore ...

Biota of Littoral Zone This zone is the shore region of the marine ecosystems and is subject to violence of waves and tides, fluctuation of water level and variability of temp

Why o-h bond is a polar covalent bond, Describe how electro negativity can ...

Describe how electro negativity can explain why a C-H bond is a no polar covalent bond, but a O-H bond is a polar covalent bond.

Define the skin capillary fragility test, Define the Skin Capillary Fragili...

Define the Skin Capillary Fragility Test? One of the earliest signs of ascorbic acid deficiency is the fragility of the capillaries. Capillary fragility is measured by applyin

Dna vs protein, Describe the difference between dna and protein. (structura...

Describe the difference between dna and protein. (structural unit, linkage bond, primary and spatial structure)

The progeny is expected to have homozygous genotypes, If a plant of genotyp...

If a plant of genotype A/a is selfed, and numerous offsprings are scored, what proportion of the progeny is expected to have homozygous genotypes?

Plant biodiversity, discuss why obelia is considered to be a special organi...

discuss why obelia is considered to be a special organism in zoology

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