CSS :: Utilization of Forest Products

1.  Soft and heart wood are include:
A. Which are derived from gymnosperms such as pines, evergreen, needle like leaves seeds in cones B. Hardwoods are those derived from angiosperms such as oak, ash, popular, with broad leaves seed enclosed bearing flowers
C. Wood responsible for sap conduction is termed as sap wood D. As the wood increases in diameter, cells to the inside are block. This portion of wood is known as heart wood
E. All of the above    

2.  The natural defects (in standing trees) are:
A. Knots B. Reaction wood or abnormal wood
C. Brashness D. Grains
E. All of the above    

3.  Knots means:
A. Live knots: v Tissues are continuous stem tissues. These are called "Tight-knots". B. Dead knots: When branch wood tissues are dead and not in continuation with main stem tissues
C. Both (a) & (b) D. None of these

4.  Reaction wood or abnormal wood are:
A. Compression wood (CW) B. Tension wood (TW)
C. Both (a) & (b) D. None of these

5.  What is the causes of abnormal wood (CW/TW)?
A. To Evarts and Mason (106) it is due to gravity B. Metzger (1908) says it is due to tension and compression
C. Wersking and Baily, due to (1942) increase or decrease in plant hormones D. Philips says (1940), it is due to wind
E. All of the above    

6.  What are causes of shakes?
A. To Kochler (1933), due unbalanced growth stresses or forces B. They may develop as a result of heavy frost
C. Both (a) & (b) D. None of these

7.  Frost injuries are:
A. Heavy frost B. Heavy low temperature
C. Both (a) & (b) D. None of these

8.  What are kinds of frost injuries?
A. Frost rings: are dark brownish lines within the growth rings as a result of injury to the cambium due to the heavy frost B. Frost cracks: to the very much low temperature, the cracks appear at the basal portion of old trees
C. Both (a) & (b) D. None of these

9.  Deodar (Cedrus deodara) utilization of timber:
A. Railway sleepers Cross arms B. Carriage and wagon work
C. House building beams, floor boards D. Door and windows frames
E. All of the above    

10.  Khail (Pinus wallichiana) utilization of timber:
A. Joinery wood B. Construction
C. Light furniture D. All of the above

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