MEDIUM
Earn 100

Ecological pyramids are of
I. three types (age pyramids, energy pyramids and biomass pyramids).
II. four types (age pyramids, energy pyramids, number pyramids and biomass pyramids).
III. five types ((age pyramids, energy pyramids, number pyramids, tropical pyramids and biomass pyramids).
Select the statements with the correct option.
(a)I, II and II
(b)I and II
(c)I only
(d)None are correct

50% studentsanswered this correctly
Important Questions on Ecosystem
EASY
Choose and write the correct option:
The pyramid of energy is:

HARD


MEDIUM

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

HARD

EASY

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

EASY
(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.

EASY

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 |

HARD




MEDIUM

MEDIUM

EASY

