The heliophytes are characterised by:

Related Mcqs:

1. The heliophytes are characterised by:

   A. High OP, high K+ conc
   B. High OP, low K+ conc
   C. Low OP, low K+ conc
   D. Low OP, high K+ conc

2. The facultative heliophytes are infact:

   A. Heliophytes
   B. Chasmophytes
   C. Chersophytes
   D. Sciophytes

3. The heliophytes possess:

   A. Low K+ concentration and low O.P
   B. High K+ concentration and low O.P
   C. Low K+ concentration and high O.P
   D. High K+ concentration and high O.P

4. The mesophytes are characterised by:

   A. Uniform mesophyll
   B. Absence of cuticle
   C. Well developed root-shoot systems
   D. All of these

5. The mangrove plants are generally characterised by:

   A. Mircophylly
   B. Pneumatophores and vivipary
   C. Absence of aerenchyma
   D. Poor water storage

6. Special character of hydrophyte is:

   A. Small spiny stem
   B. Soft and mucilaginous stem
   C. Thick and large leaf
   D. None of the above

7. Water-logged condition will quickly occur in which type of soil?

   A. Sand
   B. Loam
   C. Graved
   D. Clay

8. The optimum temperature for seedling growth in the upper gangetic plains is around:

   A. 10? – 15?C
   B. 5? – 10?C
   C. 20? – 25?C
   D. 30? – 40?C

9. Plants growing on desert and steppe are called:

   A. Oxylophytes
   B. Lithophytes
   C. Eremophytes
   D. Psilophytes

10. The permanent aggregates of soil are called:

    A. Blocks
    B. Clods
    C. Peds
    D. Plates