Guest Chaos Pudding Posted January 13, 2010 Report Share Posted January 13, 2010 They're considered to be in the kingdom Animalia, yet they don't show quite a few of the established characteristics of life, such as having tissues. When I learn enough about taxonomy and molecular biology, I'm going to devote myself to getting sponges their own kingdom. Link to comment Share on other sites More sharing options...
Dweller of Parables Posted January 13, 2010 Report Share Posted January 13, 2010 Sponges do not deserve their own kingdom though. Link to comment Share on other sites More sharing options...
CrabHelmet Posted January 13, 2010 Report Share Posted January 13, 2010 That's because Sponges diverge from pretty much everything else as early as Phylum, if I recall correctly. Link to comment Share on other sites More sharing options...
Guest Chaos Pudding Posted January 13, 2010 Report Share Posted January 13, 2010 Sponges do not deserve their own kingdom though. Nor do they deserve to be shoehorned into a kingdom in which they don't belong.That's because Sponges diverge from pretty much everything else as early as Phylum' date=' if I recall correctly.[/quote'] One of the basic characteristics of Animalia is that they have germ layers and tissue. Sponges have neither.Like Fungi ended up with? The difference between Fungi and Plantae being split and the hypothetical split of Sponges and Animalia is that there is a ton more evidence to support the Fungi/Plantae split than the Sponge/Animalia split. Pretty much the only thing that Fungi and Plantae have in common is that they both are sessile. Link to comment Share on other sites More sharing options...
CrabHelmet Posted January 13, 2010 Report Share Posted January 13, 2010 That's because Sponges diverge from pretty much everything else as early as Phylum' date=' if I recall correctly.[/quote'] One of the basic characteristics of Animalia is that they have germ layers and tissue. Sponges have neither. Actually, remembering my Biology, those are characteristics of Sub-Kingdom Eumetazoa, not of Kingdom Animalia. Sponges belong to a different part of Kingdom Animalia, Sub-Kingdom Parazoa - they split from the rest of the Kingdom even before Phylum. Link to comment Share on other sites More sharing options...
Guest Chaos Pudding Posted January 13, 2010 Report Share Posted January 13, 2010 That's because Sponges diverge from pretty much everything else as early as Phylum' date=' if I recall correctly.[/quote'] One of the basic characteristics of Animalia is that they have germ layers and tissue. Sponges have neither. Actually, remembering my Biology, those are characteristics of Sub-Kingdom Eumetazoa, not of Kingdom Animalia. Sponges belong to a different part of Kingdom Animalia, Sub-Kingdom Parazoa - they split from the rest of the Kingdom even before Phylum. They used to be, but they aren't anymore. I can't find anything that tells me why they changed it, though. Link to comment Share on other sites More sharing options...
CrabHelmet Posted January 13, 2010 Report Share Posted January 13, 2010 That's because Sponges diverge from pretty much everything else as early as Phylum' date=' if I recall correctly.[/quote'] One of the basic characteristics of Animalia is that they have germ layers and tissue. Sponges have neither. Actually, remembering my Biology, those are characteristics of Sub-Kingdom Eumetazoa, not of Kingdom Animalia. Sponges belong to a different part of Kingdom Animalia, Sub-Kingdom Parazoa - they split from the rest of the Kingdom even before Phylum. They used to be, but they aren't anymore. I can't find anything that tells me why they changed it, though. Wait, are you telling me that they got rid of Sub-Kingdoms? At the very least, Sponges still diverge at the Phylum level, in Phylum Porifera. Link to comment Share on other sites More sharing options...
Guest Chaos Pudding Posted January 13, 2010 Report Share Posted January 13, 2010 That's because Sponges diverge from pretty much everything else as early as Phylum' date=' if I recall correctly.[/quote'] One of the basic characteristics of Animalia is that they have germ layers and tissue. Sponges have neither. Actually, remembering my Biology, those are characteristics of Sub-Kingdom Eumetazoa, not of Kingdom Animalia. Sponges belong to a different part of Kingdom Animalia, Sub-Kingdom Parazoa - they split from the rest of the Kingdom even before Phylum. They used to be, but they aren't anymore. I can't find anything that tells me why they changed it, though. Wait, are you telling me that they got rid of Sub-Kingdoms? At the very least, Sponges still diverge at the Phylum level, in Phylum Porifera. No, they just got rid of that particular Sub-Kingdom. And I know they currently diverge at the Phylum level. I'm saying they should be considered to diverge at a higher level, Sub-Kingdom at least. Link to comment Share on other sites More sharing options...
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