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Banana dissection

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Banana dissection

Postby Navin on Thu Aug 25, 2005 2:07 pm

I did a banana dissection and flooded it with iodine and got the following result.

Can you explain it?
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Postby shashank_hi on Thu Aug 25, 2005 2:11 pm

I guess the central part is non-binding to the dye. I'm not sure but I suppose iodine is an acidic dye suggesting that central portion may have a net negative charge. Whereas the remaining pulp is net positive. I know it's going a bit microbio way, but maybe that's the reason...
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Postby Poison on Thu Aug 25, 2005 2:55 pm

shashank_hi wrote:I'm not sure but I suppose iodine is an acidic dye.


Iodine is the indicator of starch.
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Postby b_d_41501 on Thu Aug 25, 2005 6:22 pm

So if it's binded (the darker region) this region contains starch. If it's a lighter region, it did not bind, thus there is no starch.
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Postby MrMistery on Thu Aug 25, 2005 6:52 pm

The central region is what consisted of the reproductory system and contains no starch. But since most bananas on the market are triploid they can not create viable gamets therefore do not have seeds
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Postby mothorc on Sun Aug 28, 2005 5:16 am

What is the terminology of the green central area.(I can't find this word :oops: )
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Postby Navin on Sun Aug 28, 2005 8:06 am

isn't it the placenta?
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Postby mothorc on Mon Aug 29, 2005 5:38 am

no, placenta just use for the same organ of animals
It is: in an ovule, there are 1 or some xxxx. each xxxx have 1 or some embryal (seed) :oops:
what is xxxx :?:
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Postby mith on Tue Sep 27, 2005 5:16 am

just learnt this, placenta is where the seeds attach to the inner wall.
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Postby mothorc on Wed Sep 28, 2005 2:21 am

thanks
I ll remember it
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