1.

Explain the following with suitable examples.What type of changes occur in the amount of energy during its transfer from plants to apex consumers?

Answer»
  • Plants of the ecosystem store some of the solar energy in the form of food. 
  • Before reaching the decomposers, this energy is passed on from one trophic level to the next. 
  • At every trophic level, some amount of energy is used by the organism for its own life processes and some amount of energy is lost to the surroundings. 
  • Decomposers dissipate some amount of energy in the form of heat. 
  • However, no part of the energy ever returns to the Sun. Hence, such passage of energy is referred to as ‘one way’ transport. 
  • Therefore, energy is maximum at the base of the pyramid and is least at the apex, e.g. 
  • Phytoplankton which form the base of the pyramid have 10,000 kcal of energy while humans at the apex have 10 kcal of energy.


Discussion

No Comment Found