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EvC Forum ⇒ Science Forums ⇒ Origin of Life ⇒

What type of biological life will more than likely be found on other planets?

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Author Topic:   What type of biological life will more than likely be found on other planets?
Dr Jack
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Message 174 of 178 (671229)
08-23-2012 11:35 AM 		Reply to: Message 166 by Dogmafood
08-22-2012 9:53 PM

Re: Rare sapience
Which insects or animals don't have brains?
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Of the 35 phyla listed by Wikipedia (other sources will give slightly varying numbers), 22 have no brain, 2 have brains in only some species, 2 I wasn't sure about and just nine have brains in all members.
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If you take a more generous view of what a brain is and include any cephalisation as a "brain", then about half the 'no brain' phyla switch sides.
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So, you see, animals without brains are really not that rare.
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Dr Jack
Member
Posts: 3514
From: Immigrant in the land of Deutsch
Joined: 07-14-2003
Member Rating: 8.4

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Message 177 of 178 (671296)
08-24-2012 9:18 AM 		Reply to: Message 175 by Dogmafood
08-24-2012 8:35 AM

Re: The quantum of intelligence
Still, would you describe creatures with brains to be uncommon in the world?
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Nope. Plus, it's independently evolved multiple times so I'd argue we'd expect to see brains in all animal-like life.
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