Do all mammals have a placenta, Biology

Assignment Help:

Do all mammals have a placenta?

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

 


Related Discussions:- Do all mammals have a placenta

Is neuron a synapses onto neuron b, Is Neuron A synapses onto Neuron B ...

Is Neuron A synapses onto Neuron B Consider Neuron B in the frog central nervous system whose plasma membrane has a newly discovered ligand-gated ionotropic receptor, named the

What do you understand by cyanogenic glycosides, Q. What do you understand ...

Q. What do you understand by Cyanogenic glycosides? Cyanogenic glycosides are present in a number of food plants and seeds. Cassava is a staple dietary item in tropical Afri

Heart output, HEAR T OUTPUT The amount of blood pumped by heart per...

HEAR T OUTPUT The amount of blood pumped by heart per minute. Heart beat is 72. Pump out blood is 70 ml. This 72 × 70 = 5040 ml. ( 5 litres) blood is pumped in a minute.

Enzyme, name of enzyme that mostly used in industrial biotechnology?

name of enzyme that mostly used in industrial biotechnology?

Pathophysiology, Case scenario Mr Kit Lee, a 28-year-old unrestrained dr...

Case scenario Mr Kit Lee, a 28-year-old unrestrained driver of a utility, was travelling on a highway at 100kph and swerved to miss road debris. He lost control and struck a tre

What is prokaryotic gene expression, What is Prokaryotic Gene Expression ? ...

What is Prokaryotic Gene Expression ? Control of prokaryotic gene expression occurs primarily at the level of transcription. Prokaryotic genes are arranged in units consisting

Are bacteria the only prokaryotic beings, Are bacteria the only prokaryotic...

Are bacteria the only prokaryotic beings? Prokaryotic beings are classified into two big groups: archaebacteria and bacteria (this last also known as eubacteria). Compared

A light microscope with unlimited resolution, Theoretically you can build a...

Theoretically you can build a light microscope with unlimited magnification, but can you build a light microscope with unlimited resolution? Why or why not? (Hint: what really cont

How is plant tissues classified according to their functions, How is plant ...

How is plant tissues classified according to their functions? Plant tissues are separated into growth (embryonic) supporting, tissues, filling and photosynthetic tissues (groun

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