1. The head of cockroach is formed by fusion of ________ segments.
2. Hindwings are attached to the tergum of ________.
3. _________ pairs of walking legs are present on ventral side of cockroach.
4. Laterally, the tergum in cockroach is jointed to sternum by soft cuticle called ________.
5. Tongue-like single structure present in front of the labium between first maxillae is called as ______.