The most striking difference between tropical rain forests and temperate forests is that:

Related Mcqs:

1. Tropical rain forests are:

   A. The most valuable and the richest ecosystems on earth
   B. They play a critical pat in the earth’s life support systems and house 50% and possibly as much as 90% of all the species on earth
   C. They are a key storehouse of foods, oils and minerals and source of ingredients that make up a range of medical treatments
   D. All of the above

2. Generally seeds of species growing in cool temperate and dry tropical areas need some sort of pre-sowing treatment is/are:

   A. Weathering: Seed is exposed to sunlight, wind and rain
   B. Mechanical treatment: In order to break hard seed coat seed is beaten or crushed
   C. Fire treatment: Seed is covered with grass etc. And grass is put on fire
   D. Water treatment: Seed is soaked in hot or cold water for some hours or even days before sowing
   E. All of the above

3. Dry temperate forests depict:

   A. The canopy is only rarely closed
   B. Is often formed of widely spaced
   C. Free-standing
   D. Low-branching trees
   E. All of the above

4. Dry temperate forests are distribute throughout the inner mountain ranges beyond the effective reach of the south-west monsoon, notably in the upper reaches of the Indus and its tributaries including the whole of:

   A. Gilgit and parts of Chitral
   B. Nilam and Khaghan valleys
   C. Both (a) & (b)
   D. None of these

5. Depth of snowfall varies from ________ increasing with elevation in case of dry temperate forests:

   A. 1.4 to 6.0 m
   B. 1.5 to 7.0 m
   C. 1.6 to 8.0 m
   D. None of these

6. Himalayan moist temperate forests depict:

   A. The chief character of this type is the extensive development of coniferous forests
   B. They also extend into the dry temperature regions
   C. To a small extent into the sub-alpine forests
   D. All of the above

7. The altitudinal range is from about 1,525 m. To 3,350 m. Extending to ______ on southerly aspects in case of dry temperate forests:

   A. 3,550 m
   B. 3,650 m
   C. 3,750 m
   D. 3,850 m

8. Annual temperature in case of Himalayan moist temperate forests: is _________

   A. 12.2
   B. 13.2
   C. 14.2
   D. 15.2

9. Dry sub-tropical broad-leaved forests having:

   A. Low forest of branchy trees forming a canopy
   B. Varying in density from complete closure
   C. Under the most favourable conditions to scattered single trees or groups on the driest sites
   D. Typically field in with a shrub growth which similarly varies in density
   E. All of the above

10. Tropical thorn forests are these:

    A. Which thorny usually hard wooded species predominate, Acacia spp. Being particularly characteristic
    B. The trees usually have short boles and low branching crowns which rarely meet except on exceptionally favourable spots
    C. Both (a) & (b)
    D. None of these