These are generally, but not always, developed above the birch zone and in patches, sometimes extensive, within it, probably conditioned by edaphic and biotic factors, in Kashmir, Gilgit, Chitral and Hazra. This type ascends normally to ______ or more above the sub-alpine forests and climate must be similar but more severe than in sub-alpine forests:
A. 140 m
B. 150 m
C. 160 m
D. 170 m
A. Shrub formations often forming a quite dense cover 0.4 to 1.4 m
B. Shrub formations often forming a quite dense cover 0.5 to 1.6 m
C. Shrub formations often forming a quite dense cover 0.6 to 1.8 m
D. None of these
The characteristic genera are ______ with Junipers and occasionally Rhododendron or Ephedra:
A. Salix
B. Lonicera
C. Berberis
D. Controneaster
E. All of the above
A. Coniferous trees limited to Abies (Fir)
B. Pinus wallichiana (blue pine) stand singly
C. In groups over an irregular, sometimes dense, lower storey of broadleaved trees
D. All of the above
A. 1 to 3m
B. 1 to 4m
C. 1 to 5m
D. 1 to 5m
The conifers often attain a considerable girth even upto 3m. Whilst the brich may reach _________
A. 2.3 m
B. 2.4 m
C. 2.5 m
D. 2.6 m