Are the different types of plastids interchangeable? If yes, give examples where they are getting converted from one type to another.

Yes, plastids are interchangeable in their form.

There are three types of plastids - Chloroplasts (green colour), Chromoplasts (red, yellow, orange colour), Leucoplasts (Colourless). Depending upon different circumstances, these plastids interchange.

For example -

• The colour of green tomatoes changes to red due to replacement of chloroplasts with chromoplasts.

• The stem tuber of potato has leucoplasts but when exposed to sunlight, the leucoplasts are replaced by the chromoplasts.