From the following options, identify the layer of soil which is the main site for decomposition processes in the ecosystem.
Important Questions on Ecosystem
Identify the correct statement:
A. Detrivores perform fragmentation.
B. The humus is further degraded by some microbes during mineralisation.
C. Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.
D. The detritus food chain begins with living organism.
E. Earthworms break down detritus into smaller particles by a process called catabolism.
Choose the correct answer from the options given below:
Given below are two statements:
Statement : Decomposition is a process in which the detritus is degraded into simpler substances by microbes.
Statement : Decomposition is faster if the detritus is rich in lignin and chitin.
In light of the above statements, choose the correct answer from the options given below:
I) In a thermally stratified lake, in winter, the upper layer is known as epilimnion.
II) Animals in a lake that are capable of swimming constitute neuston.
III) The natural interconnections of food chain forms a network called food web.
IV) Energy flow in an ecosystem is unidirectional.
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.
Select the correct option for the process of decomposition.
a = Fragmentation
b = Catabolism
c = Leaching
