Inserting Rows Dynamically With Values From Other Sheets

We have a scenario like this:

1. Data (Let's say 5 fruit names are entered) will be entered in sheet1 (row wise)
2. Data (Let's say 5 flowers names are entered) will be entered in sheet2 (row wise)
2. Entered data in sheet1 and sheet2 should get automatically populated in sheet3 under respective headers (header 1 - fruits and header 2 - flowers)

Rules : 1. We will have Headers with one default empty row
2. With addition of every row in sheet1 or sheet2, a row should automatically inserted in sheet3 under respective headers and populate data.