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If an earthworm is left in 90% KOH solution for a long time,which part of it would be left undissolved:-

$\begin{array}{1 1}(A)\;\text{Setae}\\(B)\;\text{Spermatheca}\\(C)\;\text{Sand particles}\\(D)\;\text{Circular muscles}\end{array} $

2 Answers

Setae is made up of chitin. KOH dissolves chitin. Setae can be isolated
Hence (A) is the correct answer.
answered May 7, 2014 by sreemathi.v
edited Dec 4, 2017 by priyanka.c
 
A , setae of the earthworm
answered Jan 11, 2017 by shresthashreya13
 

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