What external changes are visible after the last moult of a cockroach nymph? (a) Both forewings and hindwings develop (b) Labium develops (c) Mandibles become harder (d) Anal cerci develop

What external changes are visible after the last moult
of a cockroach nymph?
(a) Both forewings and hindwings develop
(b) Labium develops
(c) Mandibles become harder
(d) Anal cerci develop
by

1 Answer

Answer :

(a) Both forewings and hindwings develop
by

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