Do all mammals have a placenta, Biology

Assignment Help:

Q. Do all mammals have a placenta?

Mammals of the monotreme group (platypus, echidnas) are oviparous egg- laying and they don't have a placenta. Mammals of the marsupial group (koalas, kangaroos, opossums) do not have a placenta either females of this group give birth to embryonic young that then continue development within the mother's pouch, placenta only forms in female placental mammals.


Related Discussions:- Do all mammals have a placenta

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 the role of linked traits in genetics, What is the role of Linked T...

What is the role of Linked Traits in genetics? In his study of inheritance in the fruit fly, Morgan observed that certain genes are distributed together, or linked, rather than

Cation and anion, what is cation and anion? list of cation and anion and it...

what is cation and anion? list of cation and anion and its biological function?

Illustrate goal of modern dentistry, Q. Illustrate goal of modern dentistry...

Q. Illustrate goal of modern dentistry? The goal of modern dentistry is to restore the patient to normal contour, comfort, function, esthetics, speech and health regardless of

What are colonies and societies, What are colonies and societies? Colon...

What are colonies and societies? Colonies are functional integrated aggregates produced by individuals of the same species. Colonies are often confused with a one individual. E

Digestive system, explain the digestive system with slides because i want t...

explain the digestive system with slides because i want to prepare this topic for CSS examination

Explain metabolic response to injury, Explain Metabolic Response to Injury?...

Explain Metabolic Response to Injury? There is an increase in the basal metabolic rate above the normal. The degree of hyper metabolism is related to the severity of the injury

Explain the advantages and disadvantages of insulin pen, Advantages of Insu...

Advantages of Insulin Pen - More convenient and easier to transport than traditional vial and syringe. - More accurate doses. - Easier to use for those with visual or fin

Zoology, give the discriptive account of nerilla which belongs to class a...

give the discriptive account of nerilla which belongs to class arciannelida in phylum annelida

Determine about the trichromatic vision, Determine about the Trichromatic v...

Determine about the Trichromatic vision Trichromatic vision is the terminology used for normal vision, those who require aU' three primary colours to make a match with an unkno

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