Multiple choice general knowledge science & technology Which tree yields the heaviest wood in the World ? Balsa (Ochroma Pyramidale) Black Iron Wood (Olea laurifolia) Durian (Durio Zibethinus) Mango (Mangifera indica) Reveal answer Fill a bubble to check yourself B Correct answer Explanation Black Ironwood (Olea laurifolia or Krugiodendron ferreum) is renowned for being one of the densest and heaviest woods, often sinking in water. Balsa is famously one of the lightest.