The dorsal sclerites in Periplaneta americana are called as:
1. | Sternites | 2. | Tergites |
3. | Pleurites | 4. | Arthroidal membranes |
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In cockroach, a chitinous hard exoskeleton covers:
1. The head segment only
2. The head and the thorax segment only
3. The thorax and the abdomen only
4. The entire body
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Statement I: | The head of cockroach is at right angle to the longitudinal body axis. |
Statement II: | The head of cockroach is formed by the fusion of six segments. |
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Which of the following mouth parts of cockroach are paired?
1. | Labrum | 2. | Labium |
3. | Hypopharynx | 4. | Maxilla |
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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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I: | the head is represented by sub-oesophageal ganglion. |
II: | the nerve cord is located on the dorsal side of the body. |
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