Extrastelar secondary growth takes place by:-
[AIPMT 1998]
Growth of leaf primordia is :
[AIPMT 1998]
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Transition of exarch bundles of root to endarch bundles of stem occurs in :-
[AIPMT 1999]
Casparian bands are present in :
[AIPMT 1999]
What happens in plants during vascularisation :
[AIPMT 2000]
In plants maximum growth occurs during which season :-
[RPMT 2000]
The tracheids differ from vessels in having
[RPMT 2000]
In Cucurbita stem vascular bundles are :-
[RPMT 2000]
The commercial cork is obtained from :-
[RPMT 2000]
"Bast-fibers" obtained from which part of woody stem :-
[RPMT 2000]
Thickness of stem increase due to activity of :-
[RPMT 2000]
Non-porous wood is found in which plants
[RPMT 2000]
In dorsiventral leaf phloem is found in which side:
[RPMT 2000]
The leaves having equal stomata on both the surfaces are called as :-
[RPMT 2000]
Most distinct annual rings are formed in which region
[RPMT 2000]
Vessels and companian cells are characteristic feature of :-
[RPMT 2000]
Loading of phloem is related to :
[AIPMT 2001]
Tunica-corpus theory was given by :
[RPMT 2001]
Grafting is not possible in monocots because:-
[RPMT 2001]
Companion cells are associated with :
[RPMT 2001]
Lateral roots are arises from :
[RPMT 2001]
A nail is driven in a stem of mango tree at 2 meter above the ground. How much height is attained by nail after 5 years :-
[RPMT 2001]
Bulliform cells are found in :-
[RPMT 2001]
The statement "All the tissues are made up of individual cells" is given by :-
[RPMT 2001]
In which living cell of vascular tissue the healthy nucleus and cytoplasm are present:
[RPMT 2001]
The fibers of Gossypium are :
[RPMT 2001]
In the T.S. of root :-
[RPMT 2001]
The resin duct of Gymnosperm is an example of
[RPMT 2001]
Vascular bundle in which phloem is found on both sides of xylem are called :-
[RPMT 2001]
Main function of lenticel is :–
[AIPMT 2002]