Abnormal/anomalous secondary growth occurs in
Dracaena
ginger
wheat
sunflower
In a woody dicotyledons tree, which of the following parts will mainly consist of primary tissues ?
All parts
Stem and root
Flowers, fruits and leaves
Shoot tips and root tips
Which exposed wood will decay faster ?
Sapwood
Softwood
Wood with lot of fibres
Heartwood
Commercial cork is obtained from
Berberis/Barberry
Salix/Willow
Quercus/Oak
Betula/Birch
Tunica corpus theory is connected with
root apex
root cap
shoot apex
secondary growth
Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by
absence of secondary xylem
absence of secondary phloem
presence of cortex
position of protoxylem
The length of different internodes in a culm of sugarcane is variable because of
shoot apical meristem
position of axillary buds
size of leaf lamina at the node below each internode
intercalary meristem
Vascular tissues in flowering plants develop from
phellogen
plerome
periblem
dermatogen
What happens during vascularization in plants ?
Differentiation of procambium is immediately followed by the development of secondary xylem and phloem
Differentiation of procambium followed by the development of xylem and phloem
Differentiation of procambium, xylem and phloem is simultaneous
Differentiation of procambium followed by the development of primary phloem and then by primary xylem.
As the secondary growth takes place (proceeds) in a tree, thickness of
heartwood increases
sapwood increases
both increase
both remain the same
