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What external changes are visible after ...

What external changes are visible after the last moult of a cockroach nymph

A

Both fore wings and hind wings develop

B

Labium develops

C

Mandibles become harder

D

Anal cerci develops

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Knowledge Check

  • What is true about cockroach?

    A
    Ureotelic animal
    B
    Entire foregut is lined by cuticle
    C
    Male have spermatheca in 6th segment
    D
    Female have caudal style

  • What is correct about the heart of cockroach ?

    A
    Blood flows towards the posterior end of the body in the heart .
    B
    The heart appears as an elongated tubular structure.
    C
    Multi - chambered with ostia as the opening between the two chambers.
    D
    All of the above

  • What is common between mosquito and cockroach ?

    A
    Both feed on liquid food
    B
    Both have pupal stages
    C
    Both have simple eyes
    D
    Both are nocturnal

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