Protection against injurious plants is / are:

Related Mcqs:

1. Protection against injurious climatic factors is / are:

   A. Temperature
   B. Frost damage
   C. Rain damage
   D. All of the above

2. Protection against animals’ is / are:

   A. Domestic animals
   B. Wild animals
   C. Both (a) & (b)
   D. None of these

3. Protection against wild animals is / are:

   A. As much a part of the forest as the trees themselves
   B. The fact that the forest exists
   C. Grows shows that the various components of the forest are in mutual equilibrium
   D. All of the above

4. The non-green plants are as important as the green plants because they:

   A. Cause human disease
   B. Cause diseases of other plants
   C. Are useful in several industries
   D. Bring about decomposition of dead animals and plant remains

5. Those chemicals which are produced by plants and affect other plants are broadly called:

   A. Depresants
   B. Allomones
   C. Allelochemics
   D. Kairomones

6. Among the plants listed, point out one that does not fit into ecological group represented by the other plants:

   A. Acacia
   B. Aloe
   C. Euphorbia
   D. Rhizophora

7. Among the plants listed, point out one that does not fit into biological group represented by other plants

   A. Euphorbia
   B. Acacia
   C. Vallisneria
   D. Aloe

8. The subject of forest protection may be dealt with under the heads:

   A. Protection against man
   B. Protection against animals
   C. Protection against injurious plants
   D. Protection against injurious climatic factors
   E. All of the above

9. The enemies of the forest are thus numerous and various and its proper protection depends on:

   A. Knowledge of the various forms of remedying such damage
   B. Knowledge of suitable methods of preventing or remedying such damage
   C. The application of such knowledge to particular cases of damage, with due regard to the cost of the proposed protective operations
   D. All of the above

10. Forest protection means:

    A. The growing of forests is a very slow process but constant
    B. Many years to accomplish
    C. If the efforts of the forester are not to be wasted
    D. It is necessary that care should be taken to protect the forest from all forms of damage
    E. All of the above