?>
Search for all polls, all stream feature posts, all deathmatch postsFind People featurePersonal Wikis Feature v0Site forums integrated better with the site + other upgradesDraft Saving feature"My Active" Forum Feed type and Newest Posts linkHUGE POSSIBLY CONFUSING CHANGE: All forum indexes switched to hottest (with indicators); a setting to revert this or make it replies
GTX0 NewestRepliesHottestMy Active
NIFE UpdatesRoadmapRequests | HelpDiscuss Game Worlds


Yolk vs Placenta etc.
Posted: Posted January 12th by chiarizio

Many plants’ seeds have endosperm, and many animals’ eggs have yolks.
Many animals and plants have placentas.
Do any have both?

Placental mammals and marsupial mammals don’t lay eggs.
Monotreme mammals’ eggs and marsupial mammals’ “eggs” do have yolks. https://en.m.wikipedia.org/wiki/Egg#Mammalian_eggs
From https://en.m.wikipedia.org/wiki/Ovule#Zygote,_embryo_and_endosperm if I understood it right, some angiosperm plants do have both endosperms and placentas. I’m surprised. The only plant I’m familiar with that has placentas is the watermelon. I can’t find it again but I saw something to suggest that maize has both endosperms and placentas; which if true is a surprise to me. There seems to be a kind of curare berry that has both, but I wouldn’t want to eat one of those.

Reply to: Yolk vs Placenta etc.
Enter your message here

Site Rules | Complaints Process | Give Feedback Facebook Page
GTX0 © 2009-2019 Xhin GameTalk © 1999-2008 lives on