In cockroach,the excretory organs are

  • A
    Malpighian tubules
  • B
    Nephridia
  • C
    Malpighian corpuscles
  • D
    Solenocytes (flame cells)

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Open circulatory system is not a physiological hindrance in a $Cockroach$ because

In cockroach, excretion is brought about by-

$A$. Phallic gland    $B$. Urecose gland    $C$. Nephrocytes    $D$. Fat body     $E$. Collaterial glands

Choose the correct answer from the options given below :

About how many times does the nymph of the Periplaneta americana undergo moulting before becoming an adult?

Alary muscles are associated with

Mark the odd one in each series:
Protonema; mesothorax; metathorax; coxa

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