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Biology
Secondary growth
Intrafascicular cambium, Interfascicular cambium and cork cambium constitutes ?
A. Wound meristem
B. Intercalary meristem
C. Lateral meristem 
D. Primary meristem
Biology
Secondary growth
Secondary growth is absent in
A. Dicot stem
B. Gymnosperms
C. Monocot stem
D. Dicot root
Biology
Secondary growth
Secondary growth is absent in
A. Hydrophytes
B. Mesophytes
C. Halophytes
D. Xerophytes
Biology
Secondary growth
Annual rings and growth rings are formed due to fluctuation in the activity of
A. Xylem
B. Phloem
C. Xylem and Phloem
D. Cambium
Biology
Secondary growth
What is the fate of primary xylem in a dicot root showing extensive secondary growth?
a) It is retained in the center of the axis
b) It gets crushed
c) May or may not get crushed
d) It gets surrounded by primary phloem.
Biology
Secondary growth
Explain secondary growth in dicot stem.
Biology
Secondary growth
Bark includes?
A)Primary xylem and periderm
B)Primary phloem and primary xylem
C)Periderm & secondary phloem
D)Periderm and pith
Biology
Secondary growth
Amphivasal or leptocentric vascular bundles are found in
(a) Cycas and Dryopteris
(b) Dracaena
(c) Helianthus and Cucurbita
(d) Maize and Wheat
Biology
Secondary growth
What is a rhytidome?
A. Bark
B. Dead tissue separated by periderm on the outside
C. Dead tissue separated by periderm on the inner side
D. Secondary cortex
Biology
Secondary growth
Explain the process of secondary growth in stems of wood Angiosperms with the help of schematic diagrams. What is its significance?
Biology
Secondary growth
Bark refers to
A. Phellem + Phellogen + Phelloderm
B. Periderm + Cortex
C. Phellem + Phelloderm + Secondary Phloem
D. Periderm + Cortex + Pericycle + Secondary Phloem
Biology
Secondary growth
Cambium ring consists of
A. Interfascicular cambium
B. Intrafascicular cambium
C. Both A and B
D. Phelloderm
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