EASY
Earn 100

Which of the following show inverted pyramid of number ?
(a)Tree ecosystem
(b)Pond ecosystem
(c)Grassland ecosystem
(d)Lake ecosystem

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Important Questions on Ecosystem
EASY
Choose and write the correct option:
The pyramid of energy is:

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Secondary consumer : 120 g
Primary consumer : 60 g
Primary producer : 10 g

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HARD
Write the suitable names of A, B, C, D, E and F in the given picture.

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(i) The trophic relationship is expressed in terms of numbers, biomass or energy arranged one on the top of its lower trophic level, resulting in a pyramid shape.
(ii) The base of each pyramid represents producers, while the apex represents the top order consumers.
(iii) The pyramid of biomass in sea is generally upright.
(iv) In the case of parasite food chain, the pyramid of number is inverted.
(v) Some species belonging to two or more trophic levels is not limitation of ecological pyramid.

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MEDIUM
Given below is data showing number of individuals and dry weight of different trophic levels in a grassland ecosystem. Construct:
Pyramid of Biomass
Trophic Level | Number of individuals | Dry weight (Kg m-2) |
Primary Producer | 5,84,2000 | 809 |
Primary consumer | 7,08,000 | 37 |
Secondary consumer | 3.54,000 | 11 |
Tertiary consumer | 3 | 1.5 |


MEDIUM
Given below is data showing number of individuals and dry weight of different trophic levels in a grassland ecosystem. Construct:
Pyramid of number
Trophic Level | Number of individuals | Dry weight (Kg m-2) |
Primary Producer | 5,84,2000 | 809 |
Primary consumer | 7,08,000 | 37 |
Secondary consumer | 3.54,000 | 11 |
Tertiary consumer | 3 | 1.5 |

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