HARD
Earn 100
Select the CORRECT difference between standing crop and standing state.
50% studentsanswered this correctly
Important Questions on Ecosystem
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
EASY
MEDIUM
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
Secondary consumer : 120 g
Primary consumer : 60 g
Primary producer : 10 g
HARD
Which of the following Pyramids in Aquatic ecosystem is not upright?
EASY
plant mice snake peacock
MEDIUM
HARD
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 |
HARD
EASY
Match the trophic levels with their correct species examples in grassland ecosystem.
| (a) | Fourth trophic level | (i) | Crow |
| (b) | Second trophic level | (ii) | Vulture |
| (c) | First trophic level | (iii) | Rabbit |
| (d) | Third trophic level | (iv) | Grass |
Select the correct option.
EASY
