Question

Match List-I with List-II:

• A. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
• B. (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
• C. (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
• D. (A)-(I), (B)-(IV), (C)-(II), (D)-(III)

Hint:

Insect exoskeleton plates (sclerites) are connected by flexible membranes allowing movement.

Answer 1

The Correct Option is C

Insect anatomy:
Pleuron: Epimeron (lateral sclerite) (A
IV)
Tergum: Postnotum (dorsal plate) (B
III)
Sternum: Eusternum (ventral plate) (C
II)
Legs: Trochantin (basal segment) (D
I)

Answer 2

Structural-relationship approach:
Insect body-wall sclerites can be traced to homologous derivatives on each segment. On the pleuron (lateral wall), the small sclerite retained near the leg base is termed the epimeron. On the tergum (dorsal wall), the plate that extends backward to cover the junction with the next segment is the postnotum. On the sternum (ventral wall), the definitive hardened plate is the eusternum, and on the legs, the small sclerite at the base that links the leg to the pleural wall is the trochantin.
Tracing each body-wall region to its named derivative sclerite in this manner reproduces the pairing A-IV, B-III, C-II, D-I.