Question

which ecological pyramid is always upright

Answer 1

Ecological pyramid

Explanation:

Three types of ecological pyramids are there and all of them are upright in direction.

Pyramid of energy-

This type of pyramid is upright in direction as the energy flows from producers to different tropic levels by loss of heat.

Producer(tree)⇒herbivores(goat)⇒carnivore(tiger)

Pyramid of number-

This type of pyramid shows upright direction in some cases when the number of producers are high and as it goes upward the number of consumer decreases.

Pyramid of biomass-

This type of pyramid may be upright or inverted as it defines the graphical representation shows the unit area of various trophic levels.

Answer 2

Ecological pyramid  which is known The pyramid of energy is always upright.

Explanation:

• The pyramid of energy is the only pyramid that can never be inverted and is always upright.
• The pyramid of energy depends upon gain or loss of energy at every trophic level.
• This pyramid  loses some amount of energy at each trophic level.
• There is only 10% of the gain of energy at a trophic level and this is transferred to the next trophic level.
• It is the only pyramid that can never be inverted and is always upright.
• The reason is that some amount of energy in the form of heat is lost to the environment at every trophic level of the food chain.
• The lost energy is measured in terms of energy per area per time.
• The  energy amount transferred from one level to the next level is noted as transfer of productivity
• It is between the trophic levels and hence it is also known as the Pyramid of productivity.
• The energy lost after the change of  each trophic level is high.

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