Question

____________ is wood that as a result of a naturally occurring chemical transformation has become more resistant to decay.

(a) Sapwood

(b) Knot

(c) Bark

(d) Heartwood

I got this question in an interview for internship.

The question is from Brickwork, Woodwork and Stone Masonry in division Rules and Methods of Measurement of Civil Engineering Drawing

Answer 1

Right choice is (d) Heartwood

Easiest explanation: Heartwood formation is a genetically programmed process that occurs spontaneously. Some uncertainty exists as to whether the wood dies during heartwood formation, as it can still chemically react to decay organisms, but only once.

Heartwood is often visually distinct from the living sapwood, and can be distinguished in a cross-section where the boundary will tend to follow the growth rings. For example, it is sometimes much darker.