The HEARTWOOD of a tree is:
ADead, dark, central wood that gives mechanical support
BLiving wood that conducts water and minerals
CThe outermost thin layer of the bark
DThe actively dividing layer of cells (cambium)
Answer & Solution
Correct answer: A. Dead, dark, central wood that gives mechanical support
HEARTWOOD = older, central, DEAD, darker wood. It provides MECHANICAL SUPPORT but doesn't conduct water. SAPWOOD (outer, lighter, alive) is the functional water-conducting xylem. Heartwood is impregnated with resins, less prone to decay.
Related questions
Each ANNUAL RING in a tree corresponds to:Secondary growth in plants is brought about primarily by:A DORSIVENTRAL leaf (typical dicot) is characterised by:In a dicot root, the xylem is described as EXARCH because:Vascular bundles in a dicot stem are described as:The phloem tissue of flowering plants is characterised by:Sclerenchyma cells are characterised by:Apical meristems are responsible for which type of plant growth?