Cork is formed from
cork cambium (phellogen)
vascular cambium
phloem
xylem
A narrow layer of thin walled cells found between phloem/bark and wood of a dicot is
cork cambium
endodermis
pericycle
Death of protoplasm is a pre-quisite for a vital function like
transport of sap
transport of food
absorption of water
gaseous exchange
Angular collenchyma occurs in
Cucurbita
Tagetes
Althaea
Salvia
For union between stock and scion in grafting which one is the first to occur?
Formation of callus
Production of plasmodesmata
Differentiation of new vascular tissues
Regeneration of cortex and epidermis
In a longitudinal section of root, starting from the tip upward, the four zones occur in the 3 following order
root cap, cell division, cell enlargement, cell maturation
root cap, cell division, cell maturation, cell enlargement
cell division, cell enlargement, cell maturation, root cap
cell division, cell maturation, cell enlargement, root cap
The apical meristem of the root is present
in all the roots
only in radicals
only in tap roots
only in adventitious roots
Periderm is produced by
fascicular cambium
phellogen
intrafascicular cambium
Monocot leaves possess
intercalary meristem
lateral meristem
apical meristem
mass meristem
Sieve tubes are suited for translocation of food because they possess
bordered pits
no end walls
broader lumen and perforated cross walls
no protoplasm
