Multiple choice

The plant ash is an indication of

  1. mineral salts absorbed by the plant

  2. organic matter of the plant

  3. both the mineral salts and organic matter

  4. none of the above

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When a plant is burned, organic matter is oxidized and released as gases (CO2, H2O), leaving behind the inorganic mineral salts as ash.