Which mouth part of cockroach acts as a tongue?
1. Labrum | 2. Labium |
3. Maxilla | 4. Hypopharynx |
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The tegmina in Periplaneta americana are:
1. Mesothoracic forewings not used in flight
2. Mesothoracic forewings used in flight
3. Metathoracic hindwings not used in flight
4. Metathoracic hindwings used in flight
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