So I'm going through my Biology textbook, we're currently doing animals. This isn't even something I'm supposed to answer, but it bugged me when I read it and didn't understand it.
The question is: "Under which conditions would you expect a bilaterally symmetrical animal not to exhibit cephalization and why?"
Even though it's not something my class is even supposed to do, it's confusing me because I always thought bilateral symmetry gave rise to cephalization. I didn't realize there was any bilaterally symmetrical organism that wasn't cephalized
In dark conditions my friend
Bump for interest.
>>7653271
sea cucumbers are secondarily bilateral and not cephalized
I'll try to think of something
>>7653271
sedentary lifestyle
think of barnacles and the sorts
>>7653271
We're Asymmetrical.
Don't believe me?
Organs like our heart and liver.
>>7654070
well that anemone is also not radial since some of its tentacles are slightly displaced
I would say under strange conditions where contact with the surrounding environment is more chemically driven than sense driven
>biology
>>7653702
Sea cucumbers are pentaradial
>>7654572
Go away
Possibly under low levels of gravity? I imagine that the signalling molecules distribution in embryonic development under such conditions may cause a deformed embryo.
>>7654464
:^)
>>7654477
Senses are just the qualia associated with chemical drives to action
>>7653271
Think of sea life.
>>7654572
>muh engineering
go suck a dick
>>7654603
Originally all Echinocerms are, cucumbers are just special, because they lay on one side.
>>7653706
>underappreciated post
when the organism is small enough that concentration of neurons in one end of the animal would not improve computation times
>>7653271
Just look at a fucking sea star.
They look superficially radial, but like most echinoderms have bilateral distribution and behavior tendencies.
And they ain't got no heads.
