Which ecosystem has the highest primary productivity?

Related Mcqs:

1. Which of the following ecosystem has highest gross primary productivity:

   A. Grassland
   B. Coral reefs
   C. Mangroves
   D. Rain forest

2. The primary productivity is minimum in the following ecosystem:

   A. Tropical rainforest
   B. Temperate grassland
   C. Tropical deciduous forest
   D. Desert shrub

3. Which of the following habitats is most unsuitable for primary productivity:

   A. Meadow
   B. Forested river bank
   C. Cave
   D. Pond

4. Aerosols reduce primary productivity by:

   A. Decreasing O2
   B. Reducing photosynthesis
   C. Competing with CO2
   D. Being toxic to chloroplasts

5. In a comparative study of grassland ecosystem and pond ecosystem it may be observed that:

   A. Primary and secondary consumers are similar
   B. Both biotic and abiotic components are different
   C. The biotic components are almost similar
   D. The abiotic components are almost similar

6. Exotic species, which brought for plantation from some other country to our country or even from one ecosystem to other ecosystem are called, as exotic species like:

   A. Pinus nigra – Japan
   B. Euralyptus – Australia
   C. Polunia – China
   D. All of the above

7. The gross primary production is maximum in the following ecosystem:

   A. Open sea
   B. Grasslands and pastures
   C. Coniferous forests
   D. Tropical and sub-tropical forest

8. Which of the following is expected to have the highest value (gm/m2/yr) in a grassland ecosystem?

   A. Tertiary Production
   B. Gross Production (GP)
   C. Net Production (NP)
   D. Secondary Production

9. In a sugarcane field the net productivity in terms of kg/m2/year, is:

   A. 0.2-0.4
   B. 2?4
   C. 4?6
   D. 0.6-0.8

10. The rate at which light energy is converted into chemical energy of organic molecules is the ecosystem’s:

    A. Net primary productivity
    B. Gross secondary productivity
    C. Net secondary productivity
    D. Gross primary productivity