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Division of forest into stands on the bais of age is:

A.	Even aged stand	B.	Un-even aged stand (selection forest)
C.	Both (a) & (b)	D.	None of these

Influence of even-aged and un-even aged groups on the tree (differences) are :

Division of forest into stands on the basis of composition is / are:

A.	Pure stand	B.	Mixed stand
C.	Both (a) & (b)	D.	None of these

Difference between pure and mixed stands is / are :

A.	To temperature	B.	To conditions favourability
C.	To destruction	D.	To extreme conditions favourability
E.	All of the above

Advantages of pur forest are:

A.	The forest easily be managed (rotation period is same soil felling can be carried out at the same time.	B.	In pure forest less skill of forester is required than in mixed forest.
C.	Both (a) & (b)	D.	None of these

Advantages of mixed stand are:

A.	Utilization of site properly	B.	Wind damages
C.	Snow damages	D.	Insect damages
E.	All of the above

Division of forest into stands on the basis of density is / are :

A.	The relative closeness of trees is called density	B.	To closeness of crowns boles and roots
C.	Both (a) & (b)	D.	None of these

Conditions or factors which influence the crown closure is:

A.	Manner of formation of tje stand	B.	Quality of soil
C.	Soil moisture	D.	All of the above

Degree of crown density in a forest stand is:

10.

The influences of crown on trees is:

A.	Quality of bole or wood	B.	Volume production per unit area
C.	Control composition of species	D.	Regulate seeds and resin production
E.	All of the above