Decomposition in An Ecosystem
Decomposition in An Ecosystem: Overview
This topic covers concepts such as Decomposers, Decomposition, Fragmentation of Detritus during Decomposition, Factors Affecting Decomposition, Detritus, Detritivores, Leaching during Decomposition, Catabolism during Decomposition, etc.
Important Questions on Decomposition in An Ecosystem
Which of the following factors favour faster decomposition of detritus?
What would happen if all the bacteria and fungi of the world are destroyed?
Choose the incorrect property with respect to characteristics of humus.
Analyse the following statements with respect to decomposition and select the correct option.
Statement 1: Decomposition is the physical and chemical breakdown of complex organic matter into simple inorganic substances.
Statement 2: Humification is the process of formation of humus from detritus or organic remains.
Read the below given statements with respect to three important steps of decomposition: fragmentation, leaching and catabolism. Select the correct option.
(i) Detritivores {e.g., earthworm) breakdown detritus into smaller particles.
(ii) Water soluble inorganic nutrients go down into soil horizon and get precipitated as unavailable salts.
(iii) Decomposers (e.g., bacteria and fungi) secrete digestive enzymes and degrade detritus into simpler inorganic substance.
| Leaching | Fragmentation | Catabolism | |
|---|---|---|---|
| (i) | (ii) | (iii) | |
| (iii) | (ii) | (i) | |
| (ii) | (i) | (iii) | |
| (ii) | (iii) | (i) |
Which all statement(s) are true for reducers?
a. They are natural scavengers.
b. Replenish the soil naturally with minerals.
c. They are top carnivores.
What is the role of fungi in a forest ecosystem?
Which of the following can accelerate the rate of decomposition of the detritus?
Which among the following group organisms can be referred as osmotrophs?
Which of the following statements is INCORRECT?
Which factor/s is responsible for controlling the rate of decomposition?
Which of the following is not a characteristic feature of the humus?
________ are important decomposers that cause decay and decomposition of dead bodies of plants and animals.
What will happen if decomposers are completely removed from the ecosystem?
The rate of decomposition of detritus is accelerated
________________ leads to accumulation of a dark coloured amorphous substance called ________ that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate.
Most animals in deep oceanic water are
By the process of leaching, _________ nutrients go down into the soil horizon and get precipitated.
Which of the following is correct about the humus?
