We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
Contact Forum Editor

Send an email to our Forum Editor:


PLEASE NOTE: Your name is used only to let the Forum Editor know who sent the message. Both your name and email address will not be used for any other purpose.

Speakers Corner


It's free to register, to post a question or to start / join a discussion


 

Animal Birth methods placental or otherwise


Terry Brown
Resolved

Likes # 0

In a science class (Biology) we got to talking about birth methods of animals and mammals. (YES- 65, retired and back to college)

Some (like humans) have a umbilical cord which needs to be cut (or severed) and sealed and others do not.

Is there any way of defining which group animals and mammals belong to, in regards to this method of birth and apart from being 'In the wild', where no facilities exist, are there any advantages / disadvantages?.

Terry

Like this post
Fruit Bat /\0/\

Likes # 0

Animals are divided into various sub-groups, including birds, mammals, reptiles, fish and insects.

As far as I am aware ALL mammals have umbilical cords.

Like this post
onthelimit1

Likes # 0

Like this post  
john bunyan

Likes # 0

From memory, Mammals (with a few exceptions) have live, "umbilical" births and suckle their young and are warm bloodied and mostly hairy.. A few mammals are egg layers - Echidnas, Duck billed platypus to name two - I assume they do not have umbilical chords..

Like this post
Terry Brown

Likes # 0

Onthelimit 1

Thanks for a very good answer, The question we was asked was:-

"Do all warm blooded animals/mammals have an umbilical used for nurturing the young and what happened to it after birth., if not name some of that do not and the reasons why not?

Thanks also to John Bunyan and Fruit Bat?/\0/\

And this is only the basics!!.

Terry

Like this post
Belatucadrus

Likes # 0

I suspect the question is referring to Marsupials and Monotremes. Both technically mammals, but neither develops their young in vitro via a placenta.

Like this post

Reply to this topic

This thread has been locked.



IDG UK Sites

Best camera phone of 2015: iPhone 6 Plus vs LG G4 vs Galaxy S6 vs One M9 vs Nexus 6

IDG UK Sites

In defence of BlackBerrys

IDG UK Sites

Why we should reserve judgement on Apple ditching Helvetica in OS X/iOS for the Apple Watch's San...

IDG UK Sites

Retina 3.3GHz iMac 27in preview: Apple cuts £400 of price of Retina iMac with new model