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Which of the following is a type of ecological pyramid? I. Number pyramid II. Biomass pyramid

Which of the following is a type of ecological pyramid? I. Number pyramid II. Biomass pyramid Correct Answer Both I and II

The correct answer is Both I and II.

Key Points

  • An ecological pyramid is a graphical depiction meant to illustrate the relationship between different living organisms at different tropical levels in an ecosystem.
  • There are three types of ecological pyramids:
    • Number pyramid,
    • Biomass pyramid, and
    • Energy pyramid
  • The pyramid of Numbers represents the total number of individuals present at each tropical level.
  • It was first coined by Elton in 1972.
  • The pyramid of Biomass indicates the total mass of organisms in a particular tropic level.

 Thus, we can say that Number pyramid and Biomass pyramid are the types of ecological pyramids.

Related Questions

Which of the following statements are correctly matched? a) Pyramid of number in Grassland Ecosystem is upright. b) Pyramid of Biomass in Pond Ecosystem is inverted. c) Pyramid of Energy is always upright. d) Pyramid of Biomass in Forest Ecosystem is inverted. Choose the correct answer
Ecological pyramid shows the number energy or biomass at each trophic level. Generally ecological pyramids are upright. However, one of the following pyramid is 'inverted'. Identify.
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Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.
Modern civilization is completely dependent on energy, which has therefore to be abundant and also economical. About 85% of the world's energy is supplied by oil, coal and natural gas while nuclear, hydro, wind and solar power and biomass supply the rest. Coal, nuclear and hydro are used primarily to generate electricity while natural gas is widely used for heating. Biomass is used both for heating and cooking. The wind and solar power is the future's hope as they are sustainable energy sources. Oil powers almost all machines that move and that makes oil uniquely versatile. Oil powered airplanes carry 500 people across the widest oceans at nearly the speed of sound. Oil powered machines produce and transport food. Oil powered machines are ubiquitous. Clearly, we live in the age of oil but it is drawing to a close. According to data available if oil production remains constant until it's gone, there is enough to last 42 years. Oil wells will produce less as they become depleted, which will make it impossible to keep production constant. Similarly natural gas and coal will last another 61 years and 133 years respectively. Naturally, as they become scarce, they become expensive, leading to a worldwide energy crisis. If we are to survive on this planet, we have to make a transition to sustainable energy sources. The transition may be willy-nilly or planned - the choice is ours. The dawning era of limited and expensive energy will be very difficult for everyone on earth but will be even more difficult if it is not anticipated. It is of utmost importance that the public and policymakers understand the global energy crisis and act in tandem to ensure that the species 'homo sapiens' does not become extinct. Biomass is an energy source used in