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Alimentary Canal of Cockroach

Mark the odd ...

Question

Mark the odd one in each series :
(a)Maxilla ; manidble ; labrum ; antennae
(b) Protonema ; mesothorax ; metathorax ; coxa.

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Solution

(i) Antennae. It is not the masticating part. The rest three are mouth parts of cockroach.
(ii) Protonema. The rest three are body parts of insect.

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