For union between stock and scion in grafting which one is the first to occur?
Formation of callus
Production od plasmodesmata
Differentiation of new vascular tissues
Regenration of cortex and primary phloem
passage cells are thin walled cells found in ____________.
endodermis of roots facilitating rapid transport of water from cortex to pericycle
Phloem elements that serve as entry points for substances for transport to other plant parts
testa of seeds to enable emerrgence of growing axis during seed germination
central region of style through which the pollen tube grows towards the ovary.
The following gives example of lateral meristem.One remainbs unrelated with the idea that is
Fascicular cambium
Inter fascicular cambium
Cork cambium
Root cambium
As the secondary growth takes place in a tree, thickness of ________________.
heartwood increases
sapwood increases
both increases
both remain the same
Sclerenchyma fibres of phloem are called ___________
Sclerieds
bast fibres
Wood
Jute
Growth of plants restricted to specialised areas known as
Roots
stem
vascular cambium
meristems
Pericycle of roots produces ___________.
mechanical support
lateral roots
vascular bundles
adventitious buds
Epidemics,cortex and ground tissues derived from protoderm,procambium and ground meristem respectively.Is the statement true or false.
false
true
true/false
always falls
___________are known as cylindrical meristems.
Lateral Meristems
Apical Meristems
Shoot meristem
Root Meristem
Elongated,narrow cells with thick and lignified cells walls having Lew or numerous pits are called ____________
Parenchyma
Collenchyma
Sclerenchyma
Aerenchyma
