Secondary Growth in Plants
Secondary Growth in Plants: Overview
This topic covers concepts, such as Formation of Cambial Ring, Activity of the Cambial Ring, Secondary Xylem, Secondary Phloem, Primary Xylem, Spring Wood, Autumn Wood, Periderm, Bark, Cork Cambium, etc.
Important Questions on Secondary Growth in Plants
Secondary growth in extrasteler region is due to activity of
What is the position of oldest secondary phloem?
The wood is actually a
Which of the following is a part of periderm?
a. Cork
b. Secondary phloem
c. Intrafascicular cambium
d. Primary xylem
Heartwood differs from sapwood in
What is true about cork cambium?
Which of the following is an incorrect difference between heartwood and sapwood?
State true (T) or false (F) to the given statements and select the correct option.
(a) Annual rings are distinct in plants growing in temperate regions.
(b) Lenticels occur in most woody trees and permit the exchange of gasses.
(c) Due to stelar secondary growth central cylinder of wood surrounded by secondary phloem is formed.
(d) The cells of the endodermis opposite to protoxylem divided to give rise to vascular cambium in dicot roots.
Which of the following is true for the dicot roots?
Bark refers to all tissues exterior to the
In a stem which is covered by periderm and in which stomata are absent, gaseous exchange takes place through:
The feature which is common to both heartwood and sapwood is
Besides phellem, phellogen, root periderm comprises of
The heartwood cannot conduct water because of
Which of the following is the function of heartwood?
Growth rings are generally well marked in trees growing in
An annual ring is formed by
The wood is, in fact, a
