Main source of energy in Pakistan is:

Related Mcqs:

1. Which of the following is non-renewable source of energy:

   A. Mineral
   B. Water
   C. Forest
   D. Solar energy

2. Which one of the following is a reversible source of energy?

   A. Petroleum
   B. Coal
   C. Nuclear fuel
   D. Trees

3. The source of energy in an ecosystem is:

   A. sugar stored in plants
   B. Light received from the sun
   C. Heat liberated during fermentation
   D. Heat liberated during respiration

4. Source of energy in an ecosystem is:

   A. Sun
   B. ATP
   C. Sugar made by plant
   D. Green plant

5. The ultimate energy source of ecosystem is:

   A. Solar energy
   B. Biomass
   C. Producer
   D. Carbohydrates

6. The transfer of food energy from the source in plants through a series of organism with repeated stages of eating and being eaten is known as:

   A. Food web
   B. Food chain
   C. Food cycle
   D. None of these

7. Energy flow and energy transformations in living systems strictly conform to the:

   A. Law of limiting factors
   B. Liebig’s law of minimum
   C. Laws of thermo dynamics
   D. Shelford’s law of tolerance
   E. Biogenetic law

8. The ration of food energy assimilated to the food energy ingested is called:

   A. Trophic level efficiency
   B. Photosynthetic efficiency
   C. Net production efficiency
   D. Assimilation efficiency

9. The transfer of energy from one trophic level to another is governed by the 2nd law of thermodynamics. The average efficiency of energy transfer from herbivores to carnivores is:

   A. 25%
   B. 50%
   C. 10%
   D. 5%

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