In a cockroach, the open circulatory system does not pose a physiological barrier because ...

  • A
    The heart is of a simple type and segmented.
  • B
    The blood is colorless.
  • C
    The circulatory system and the respiratory system are not connected to each other.
  • D
    Excretion occurs through Malpighian tubules.

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Give names of female and male organs located in the abdomen of a cockroach.

Describe the circulatory system of a cockroach.

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