The greatest biomass of autotrophs in the world’s oceans is that of:

Related Mcqs:

1. From gross production of autotrophs, according to Lindemann, how much energy in gcal/cm2/year is used in respiration and decomposition respectively:

   A. 78.2, 29.3
   B. 78.2, 3.5
   C. 29.3, 3.5
   D. 23.9, 5.3

2. Which of the following characterizes the biomass in an ecosystem?

   A. The biomass of producers is less than the combined biomass of consumers and decomposers
   B. No general statement can be made about relative biomass of different ecological groups
   C. The biomass of secondary consumers is usually greater than the biomass of primary consumers
   D. The biomass of producers is generally greater than the biomass of primary consumers

3. In lake ecosystem, the pyramid of biomass is:

   A. Upright
   B. Inverted
   C. Anything possible
   D. None is correct

4. The pyramid of biomass in a shallow pond ecosystem is:

   A. Inverted
   B. Upright
   C. Rhomboidal
   D. Liver

5. The pyramid of biomass is variable in some:

   A. Grassland ecosystems
   B. Pond ecosystems
   C. Parasitic ecosystems
   D. Forest ecosystems

6. The pyramid of biomass in a forest ecosystem is:

   A. Upright
   B. Inverted
   C. Rhomboidal
   D. Linear

7. The pyramid of biomass in a parasitic ecosystem is:

   A. Upright
   B. Inverted
   C. Linear
   D. Rhomboidal

8. In an upright pyramid of biomass, the herbivores occupy the position:

   A. 4
   B. 2
   C. 3
   D. 1

9. In a food chain, the total amount of living material is depicted by: A. Pyramid of biomass B. Pyramid of energy C. Pyramid of number D. Trophic levels

   xA. Pyramid of biomass
   B. Pyramid of energy
   C. Pyramid of number
   D. Trophic levels

10. The percentage of water found in oceans is:

    A. 89%
    B. 93%
    C. 97%
    D. 86%