A. Mineral
B. Water
C. Forest
D. Solar energy
Related Mcqs:
- Non-renewable environmental resources include various metals non-metalic minerals and
A. Coal
B. Natural gas
C. Oil
D. Fossil fuels - Which one of the following is a reversible source of energy?
A. Petroleum
B. Coal
C. Nuclear fuel
D. Trees - 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 - Source of energy in an ecosystem is:
A. Sun
B. ATP
C. Sugar made by plant
D. Green plant - The ultimate energy source of ecosystem is:
A. Solar energy
B. Biomass
C. Producer
D. Carbohydrates - 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 - Main source of energy in Pakistan is:
A. Hydro-electricity
B. Atomic energy
C. Coal energy
D. None of these - 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 - 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 - 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%
