In cockroach,the number of ganglia are

  • A
    Two pairs thoracic and four pairs abdominal
  • B
    Three pairs thoracic and six pairs abdominal
  • C
    Three pairs thoracic and five pairs abdominal
  • D
    Two pairs thoracic and six pairs abdominal

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Which enzyme is present in the saliva of a cockroach?

The salivary glands in a cockroach open into the ..........

In a cockroach,the grinding of food takes place in the ........?

Which secretion is responsible for the characteristic pungent odor in cockroaches?

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

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