Question

Study carefully the following statements and select the incorrect one(s).
(i) Lateral roots develops from pericycle.
(ii) Endodermis is the innermost layer of cortex.
(iii) Sapwood is the central, dark coloured, non-conducting part of secondary xylem.

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (i) only
• D. (iii) only

Answer 1

The correct option is D (iii) only

Some of the dividing pericycle cells are committed to the asymmetric, formative divisions that give rise to lateral root primordia and lateral root formation.

The endodermis is the central, innermost layer of cortex in some land plants. It is made of compact living cells surrounded by an outer ring of endodermal cells with hydrophobic substances (Casparian strip) to restrict the apoplastic flow of water to the inside.

The peripheral region of the secondary xylem, is lighter in colour and is known as the sapwood. It is involved in the conduction of water and minerals from root to leaf.