As an adaptation to fire, some plants produce lignotubres which are:

Related Mcqs:

1. Useful adaptation of hydrophytes is:

   A. Large leaves
   B. Decrease in mechanical tissue
   C. Large mechanical tissue
   D. Increase in aerenchyma

2. Which adaptation is seen in the leaf insect?

   A. Migration
   B. Camouflaging
   C. Batesion mimicry
   D. Mullerian mimicry

3. The West Pakistan (Adaptation of Law) Ordinance ______.

   A. 1958
   B. 1959
   C. 1960
   D. 1961

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

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

5. 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

6. 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

7. 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

8. As a result of fire, there is destruction of the following components of soil:

   A. Litter
   B. Organisms
   C. Inorganic matter
   D. All of these

9. The advantage/s of fire:

   A. Reduction of biotic thrust
   B. Destruction of diseased plants
   C. Both (a) & (b)
   D. None of these

10. Hydrological effects of fire are:

    A. Change of species
    B. Human and litter is burnt
    C. Soil loss, surface run off and peak flow are increased
    D. Infiltration capacity is decreased
    E. All of the above