sap-wood is

Assertion (A) : Sap wood is vital to the plant but heart wood is not . Reason (R ) : When the heart wood of the tree is destroyed, no vital function of the plant is affected , when the sap wood is destroyed the plant will die, conduction of water is blocked.

Study carefully the follwing statemnets and select in incorrect one (s). (i) Lateral roots develop from pericycle (ii) Endodermis is the innermostk layer of cortex (iii) Sap wood is the central, dark coloured, non-conducting part of secondary xylem. (iv) Hypodermis is always parenchy-matous in nature.

Heart wood is softer than the sap wood and not durable.

Heart wood is softer than the sap wood and not durable.

Sap wood/Heart wood is dark brown in colour.

Sap wood differ from heart wood is being-

What do heart wood and sap wood stand for ?

Sap wood differ from heart wood is being-

Choose the correct alternative. Sap wood/Heart wood is dark brown in colour.

Heart wood is more useful than sap wood . Justify .