| List - I (Machine Parts) | List - II (Their Features) |
|---|---|
| (A) Bolt | (I) A machine part having a threaded hole |
| (B) Nut | (II) A cylindrical piece having threads at both ends |
| (C) Washer | (III) A cylindrical body with one end threaded and other end in form of Head |
| (D) Stud | (IV) A circular plate having a hole in its centre |



Select the statements that are CORRECT regarding patterns of biodiversity.
Which of the following hormone is not produced by placenta ?
List - I | List - II | ||
| A | Streptokinase | I | Blood-Cholestrol lowering agents |
| B | Cyclosporin | II | Clot Buster |
| C | Statins | III | Propionibacterium sharmanii |
| D | Swiss Cheese | IV | Immuno suppressive agent |
Which of the following option determines percolation and water holding capacity of soils ?