A. Current annual increment (CAI)B. Mean annual increment (MAI)C. Both (a) & (b)D. None of these

A. The increase in girth, diameter, basal area, height, volume, quality B. Value of individual tree or crops during a given period C. Utilizable portions of total woody growth goes on increasing D. All of the above

A. The attention is concentrated still further on the selection of the stems evenly spaced over the groundB. Which are to be retained to maturity or till the last thinning or twoC. Both (a) & (b)D. None of these

A. The trees to be cut or retained are chosen on the basis of a predetermined spacingB. Or pattern with little or no regard for their position in the crown canopyC. Both (a) & (b)D. None of these

A. They are restricting the development of their neighbours on all sidesB. They are less valuable than their neighboursC. They are of no special importance with regard to desirable species mixtureD. All of the above

A. In principle from the two methods already discussed B. The dominant trees are removed in order to stimulate the growth of the trees of the lower crown classes C. The same kind of vigorous trees those are favoured in crown D. All of the above

A. Light Thinning (A-Grade)B. Moderate Thinning (B-Grade)C. Heavy Thinning (C-Grade)D. Very Heavy Thinning (D-Grade)E. All of the above

­A. Trees are removed from the lower crown classesB. In the highest grade of low thinnings only the suppressed trees would be removedC. Both (a) & (b)D. None of these

A. Low thinning or ordinary thinningB. Crown thinnings or high thinningC. Selection thinningD. Mechanical thinningE. All of the above

A. DominantB. Dominated and suppressedC. Both (a) & (b)D. None of these