Odum did not recognise the following relationship as a positive interaction:

Related Mcqs:

1. According to Odum, the percentage of net primary production of total light intake is:

   A. 10%
   B. 0.15%
   C. 1%
   D. 1.50%

2. According to Odum the light absorbed by the plant cover in terms of kcal/m2/day is:

   A. 150
   B. 1,500
   C. 300
   D. 3,000

3. Odum has described soil erosion as:

   A. Soil pollution
   B. Creeping death of soil
   C. Loss of living stratum
   D. Loss of feeding zone

4. The study of interaction between living organisms and environment in a specific area is the study of:

   A. Photobiology
   B. Phytogeography
   C. Ecosystem
   D. Phytosociology

5. The following relationship does not correspond to mutualism:

   A. Zoophily
   B. Zoochory
   C. Epiphytism
   D. Mycorrhiza

6. The principal of positive economic features and the underlying hypotheses about agroforestry are:

   A. Maintains or increases site productivity through nutrient recycling and soil protection, at low capital and labour costs
   B. Increase the value of output on a given area of land through spatial or inter temporal intercropping of tree and other species
   C. Both (a) & (b)
   D. None of these

7. Positive pollution of soil is due to:

   A. Excess use of fertilizers
   B. Addition of wastes on soil
   C. Reduction in soil productivity
   D. All of these

8. The relationship between a climber and the host corresponds to:

   A. Neutralism
   B. Mutualism
   C. Parasitism
   D. Commensalism

9. Relationship between nitrogen fixing bacteria and a legume plant is described as:

   A. Mutualistic
   B. Parasitic
   C. Saprophytic
   D. Commensal

10. Ecology is the study of relationship of:

    A. Organism and environment
    B. Man and environment
    C. Soil and water
    D. Husband and wife