I: | In cockroaches, the forewings are transparent and prothoracic in origin. |
II: | In cockroaches, the hind wings are opaque, leathery and mesothoracic in origin. |
A. | Phallic gland |
B. | Urecose gland |
C. | Nephrocytes |
D. | Fat body |
E. | Collaterial glands |
1. | B and D only | 2. | A and E only |
3. | A, B and E only | 4. | B, C and D only |