Plants absorb from the soil:

Related Mcqs:

1. In water logged soil plants cannot grow properly because the soil is:

   A. Physiologically wet
   B. Physiologically dry
   C. Physically dry
   D. None of the above

2. Removal of top soil by soil erosion result in the loss of soil:

   A. Nitrites
   B. Nitrates
   C. Nitrogen
   D. Nitric and nitrous acids

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

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

4. 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

5. 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

6. The zone of soil showing microbial activity around the roots of higher plants is called:

   A. Rhizosphere
   B. Rhizoplane
   C. Soil microflora
   D. All of these

7. Plants growing on burnt soil are called:

   A. Heliophilous
   B. Hydrophilous
   C. Pyrophilous
   D. Pyriform

8. Plants growing on externally cold soil are called:

   A. Halophyte
   B. Oxylophyte
   C. Psychrophyte
   D. Psammophyte

9. Plants growing in extreme cold soil are:

   A. Oxylophytes
   B. Halophytes
   C. Psychrophytes
   D. Psammophytes

10. Plants growing in loose non-saline soil are:

    A. Xerophytes
    B. Halophytes
    C. Mesophytes
    D. Lithophytes