When the substratum has ample of organic matter and there are many deterivore participating in the process, the succession is called:

Related Mcqs:

1. When the process of succession sidetracks the advancement line, it is called:

   A. Primary
   B. Deflated
   C. Secondary
   D. Induced

2. Which of the following horizons has the maximum amount of organic matter?

   A. Horizons A2 and B
   B. Horizon B only
   C. Horizon A1
   D. Horizons B and C

3. The organic matter, generally 0.5 – 0.8% to about 75 – 100 cm depth, drops to about 0.3% at ______.

   A. Lower depths
   B. Upper depths
   C. Middle depths
   D. None of these

4. Sources of organic matter are:

   A. Primary
   B. Secondary
   C. Both (a) & (b)
   D. None of these

5. The major effects of soil organic matter are:

   A. Soil depth
   B. Climatic situation
   C. Both (a) & (b)
   D. None of these

6. Soil organic matter includes:

   A. The partially decayed
   B. Resynthesized plant
   C. Animal residues
   D. All of the above

7. Due to modification of the environment by the plant community itself, when one community is replaced by another suitable community, the succession is called:

   A. Induced
   B. Deflated
   C. Allogenic
   D. Autogenic

8. If a piece of land which had a plant community becomes barren due to some external thrust, the succession taking place here is called:

   A. Induced
   B. Deflated
   C. Secondary
   D. Retrogessive

9. Plant succession taking place in sandy area is precisely called:

   A. Halosphere
   B. Psammosphere
   C. Xerosphere
   D. Hydrosphere

10. The last community in a succession is called:

    A. Ecosystem
    B. Climatic community
    C. Ecotons
    D. Seral community