Decomposition

What do you mean by the word 'decaying matter'?

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:

Read the following statements and select the correct option:

Statement A: Humus is highly resistant to microbial action and undergoes decomposition at extremely fast rate.

Statement B: The humus is further degraded by some microbes and release of inorganic nutrients occurs by mineralisation. 

Marshy areas often consist of hard outer coverings as detritus that are remains of organisms such as crabs. State TWO reasons why decomposition would be limited in such areas. 

Differentiate between detritivore and decompoer with an example of each.

Earthworms help in

Identify the process in which water soluble inorganic nutrients are precipitated as unavailable salts

Which of the following is not a proper description of decomposition process?

Describe the term decomposition.

What do you mean by detritus?

What is called detritus food chain?

Distinguish between the following-

Litter and Detritus

In which of the following biomes, decomposition of detritus will be fastest?

Decomposers like fungi and bacteria are
(i) Autotrophs
(ii) Heterotrophs
(iii) Saprotrophs
(iv) Chemo-autotrophs Choose the correct answer

Which of the following statement regarding decomposition is false

In a particular climatic condition, decomposition rate is slower if

Where do you think the process of decomposition would be the fastest?
 

Find the correct sequence of steps involved in the process of decomposition.

(a) Mineralisation

(b) Fragmentation of detritus

(c) Catabolism

(d) Leaching

(e) Humification

Decomposers like fungi and bacteria are

(i) autotrophs.
(ii) heterotrophs.
(iii) saprotrophs.
(iv) chemo-autotrophs.

Choose the correct answer.

From the given table of factors affecting microbial decomposition. $({+}^{\text{'}}{\text{ means }}^{\text{'}}{\text{ favouring }}^{\text{'}}{\text{ and }}^{\text{'}}{-}^{\text{'}} means inhibiting or lowering)$.

Select the correct option.