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Question
Read the following statements regarding ecological pyramids and choose the correct answer.
(a) Relationship between organisms at different trophic levels is expressed in terms of number, biomass and energy.
(b) Any calculations of energy content, biomass or number has to include one group of organisms at that trophic level.
(c) In most ecosystems, all the pyramids of number, biomass and energy are upright.
(d) The pyramid of biomass in sea is generally inverted.
(e) Pyramid of energy is always inverted and can never be upright.
Read the following statements regarding ecological pyramids and choose the correct answer.
(a) Relationship between organisms at different trophic levels is expressed in terms of number, biomass and energy.
(b) Any calculations of energy content, biomass or number has to include one group of organisms at that trophic level.
(c) In most ecosystems, all the pyramids of number, biomass and energy are upright.
(d) The pyramid of biomass in sea is generally inverted.
(e) Pyramid of energy is always inverted and can never be upright.
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Solution
The correct option is C b and e are wrong
Ecological pyramid is a graphical representation indicating the relationship between organisms at different trophic levels. It is expressed in terms of number, biomass and energy. Based on this, it is of 3 types, pyramid of number, pyramid of biomass and pyramid of energy.
Any calculations of energy content, biomass or number has to include all groups of organisms at that trophic level.
In most ecosystems, all the pyramids of number, biomass and energy are upright as the producers mainly have high numbers, maximum biomass and thus greater energy and it decreases as we move from producers to higher trophic level.
In some ecosystems, pyramid of number and pyramid of biomass is inverted. For example, the pyramid of biomass in sea is generally inverted.
However, the pyramid of energy is always upright and never be inverted. Thus, the correct answer is 'b and e are wrong.'
Ecological pyramid is a graphical representation indicating the relationship between organisms at different trophic levels. It is expressed in terms of number, biomass and energy. Based on this, it is of 3 types, pyramid of number, pyramid of biomass and pyramid of energy.
Any calculations of energy content, biomass or number has to include all groups of organisms at that trophic level.
In most ecosystems, all the pyramids of number, biomass and energy are upright as the producers mainly have high numbers, maximum biomass and thus greater energy and it decreases as we move from producers to higher trophic level.
In some ecosystems, pyramid of number and pyramid of biomass is inverted. For example, the pyramid of biomass in sea is generally inverted.
However, the pyramid of energy is always upright and never be inverted.
Thus, the correct answer is 'b and e are wrong.'
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