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Which of the following statement is incorrect about cockroach :-

$\begin{array}{1 1}(A)\;\text{Nocturnal vision has more sensitivity & less resolution}\\(B)\;\text{Blood from cockroach's heart is pumped posteriorly}\\(C)\;\text{Malpighian tubules helps in removal of excretory product from hemolymph}\\(D)\;\text{In females 7th segment is boat shaped}\end{array} $

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Blood is pumped anteriorly by cockroach's heart.
Hence (B) is the correct answer.
answered May 7, 2014 by sreemathi.v

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