Group of two and more plant groups is known as:

Related Mcqs:

1. The classification of plant groups on the basis of temperature differentiating four zone such as megatherms was proposed by:

   A. Clements
   B. Raunkiaer
   C. Odum
   D. Warming

2. Plant groups growing in zones where high temperature alternates with low temperature are called:

   A. Megatherms
   B. Hekistotherms
   C. Microtherms
   D. Mesotherms

3. The characteristics of the original group system was the undulating profile of the regenerated corp obtained by reason of the considerable variation in age between the groups of regeneration:

   A. Gayer’s line
   B. Group system
   C. Clear strip system
   D. None of these

4. The alpine forests are classed under the plant group called:

   A. Mesotherms
   B. Megatherms
   C. Microtherms
   D. Hekistotherms

5. Percentage of water left in the soil when a plant wilts is known as:

   A. Turgidity
   B. Wilting coefficient
   C. Field capacity
   D. Water retaining power of the soil

6. In which system that the regeneration of the compartment is started form natural foci or groups of advance growth?

   A. Uniform system
   B. Group system
   C. Clear strip system
   D. None of these

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

   A. To bole length
   B. To growth rings
   C. To shade
   D. To number of trees
   E. All of the above

8. In which of the following groups, all the plants belong to the same category?

   A. Nymphaea, Poamogeton, Victoria
   B. Utricularia, Typha, Aponogeton
   C. Lemna, Spirodela, Azolla
   D. Ranunculus, Vallisneria, Hydrilla

9. Division of trees in various groups is:

   A. Evergreen
   B. Deciduous
   C. Both (a) & (b)
   D. None of these

10. The last stage of plant succession is:

    A. Ecotone
    B. Climax stage
    C. Seral community
    D. Ecotype