Question

1. Identify the incorrect statement

a)Due to deposition of tanning, remins, oils.
heart wood in dark in colour

b)Heart wood does not conduct water but gives
mechanical support

c)Sapwood is involved in conduction of water
and minerals from root to leaf

d)Sapwood in the innermost secondary xylem
and is lighter in colour​

Answer 1

Answer:

The greater part of secondary xylem in old trees is dark brown due to deposition of organic compounds in the central or innermost layers of the stem. This region comprises dead elements with highly lignified walls and is called heartwood. It does not conduct water but gives mechanical support to the stem.

The peripheral part of the secondary xylem is lighter in colour and is known as the sapwood. The walls are not lignified and there is no deposition of organic compounds. It is involved in the conduction of water and minerals from root to leaf.

Answer 2

Answer:

sapwood is the innermost secondary xylem and is lighter in colour