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

Define th technique - stage two using a mucoperiosteal flap, Stage two usin...

Stage two using a mucoperiosteal flap A Mid crestal incision over the implant site is made and reflection of mucoperisteal flap is done under local anesthesia. After locating t

Explain the techniques of numerical taxonomy, Explain the Techniques of Num...

Explain the Techniques of Numerical Taxonomy Many other techniques of numerical taxonomy are available now, some with special objectives. Classification based on the methods

Individual incomes and health investment, Normal 0 false fals...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Define historical example population genetic theory, Define Historical Exam...

Define Historical Example Population genetic theory? Population genetic theory, first developed by Sir Ronald Fisher, JBS Haldane and Sewall Wright, demonstrated how several ev

Explain the concept of menu planning, Explain the Concept of Menu Planning?...

Explain the Concept of Menu Planning? You have learnt from the previous units that our body's many functions, be it physical activity, mental exercise, growth (in the case of c

Determine the evaluation of the bone, Evaluation of the bone Evaluation...

Evaluation of the bone Evaluation of the bone -implant interface needs to be done by the following: Failures in Implant Dentistry 1) Implant mobility and discomfort 2)

Determine the term - coupling factors, Determine the term - coupling factor...

Determine the term - coupling factors The coupling factors, also called the F l ATPase, present on the inner mitochondrial membrane facing the matrix side, are a very complex a

Explain the maurice theory according to corneal transparency, Explain about...

Explain about the Maurice Theory according to corneal transparency. Maurice Theory: The uniform collagen fibrils are arranged in regular lattice pattern separated b

Difference between the exocrine and endocrine gland, Q. What is the differe...

Q. What is the difference between the exocrine gland and the endocrine gland? Endocrine gland is a gland whose secretions are called as hormones that are collected by the blood

Determine the name of material used for bcc, Determine the name of Material...

Determine the name of Material used for BCC You must be interested to know about type of material you can prepare and some material is available in hospitals and clinics for us

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