NEET2020BotanyAnatomy of Flowering PlantsActual
Identify the incorrect statement.
Options
- ASapwood is involved in conduction of water and minerals from root to leaf
- BSapwood is the innermost secondary xylem and is lighter in colour
- CDue to deposition of tannins, resins, oils etc., heart wood is dark in colour
- DHeart wood does not conduct water but gives mechanical support
Correct answer
B. Sapwood is the innermost secondary xylem and is lighter in colour
Step-by-step solution
Heartwood and Sapwood: In old dicot trees the greater part of the secondary wood in the center of the stem is filled with gums, resins, tannins, tyloses, etc., which makes it hard and non-functional. This region is known as Heartwood or Duramen . The narrower outer region of the secondary wood remains light-colored and is called Sapwood or Alburnum . Sapwood helps in inorganic translocation.