Ecosystem NEET PYQs

Identify the correct statements:
A. Detrivores perform fragmentation.
B. The humus is further degraded by some microbes during mineralization.
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 organisms.
E. Earthworms break down detritus into smaller particles by a process called catabolism.

In the equation GPP – R = NPP
GPP is Gross Primary Productivity
NPP is Net Primary Productivity.

R here is:

Given below are two statements:
Statement I: Decomposition is a process in which the detritus is degraded into simpler substances by microbes.
Statement II: Decomposition is faster if the detritus is rich in lignin and chitin.
In the light of the above statements, choose the correct answer from the options given below:

Which one of the following will accelerate phosphorus cycle?

Detritivores breakdown detritus into smaller particles. This process is called:

The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as:

Which of the following statements is not correct?

In the equation GPP–R = NPP.
R represents:

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

In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?