
Explanation: Used to describe a regular action or a general truth.
Example: She plays the piano every day.
Explanation: Describes an action that happened and was completed in the past.
Example: He played football yesterday.
Explanation: Describes an action that started in the past and is still continuing or has recently stopped.
Example: She has been playing the guitar for two hours.
Explanation: Describes a continuous action that was happening before another past event.
Example: He had been playing video games before the guests arrived.

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 ?