Which of the following does not constitute a part of sigmoid curve?

Related Mcqs:

1. The decomposers in an ecosystem constitute the following trophic level:

   A. T1
   B. T3
   C. T5
   D. T4

2. Individuals of the same species in a particular locality constitute:

   A. Population
   B. Community
   C. Flora
   D. Fauna

3. Green plants constitute:

   A. The first trophic level
   B. The second trophic level
   C. The third trophic level
   D. The fourth trophic level

4. All the living organisms on the earth interacting with atmosphere constitute:

   A. Biosphere
   B. Community
   C. Biome
   D. Association

5. Plants constitute the:

   A. Third trophic level
   B. Fourth trophic level
   C. First trophic level
   D. Second trophic level

6. The living organisms of all ecosystems collectively constitute:

   A. Producers
   B. Decomposers
   C. Consumers and decomposers
   D. Biosphere

7. The areas laying above an altitude of about ______ and below zone of perpetual snow constitute alpine pastures:

   A. 3000 m
   B. 4000 m
   C. 5000 m
   D. 6000 m

8. The following relationship does not correspond to mutualism:

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

9. Among the following characters which one does not characterise a hydrophyte?

   A. Abundant air spaces and air chambers
   B. Plentiful xylem and sclerenchyma
   C. Leaves having stomata only on the upper side or none
   D. Poor development of roots

10. Which of the following does not cause pollution?

    A. CO2
    B. SO2
    C. H2
    D. CO