Tag: ecosystems

Quizzes (8) Questions (118)

Questions Related to ecosystems

Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

The decomposed organic matter is called

  1. Callose

  2. Callus

  3. Litter

  4. Humus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Decomposition is the process of breaking of complex organic matter into simpler inorganic matter. There are five steps of decomposition. These are fragmentation, leaching, catabolism, humification and mineralization. Fragmentation is the process of breaking of detritus into small pieces by detrivores. Leaching is the process of releasing nutrients in the water and seeping into the soil. Catabolism is the process of breaking down of complex molecules into the simpler molecules. Humification is the process of formation of dark colored humus on the soil. The decomposed organic matter is called as humus. Mineralization is the process of degradation of the hummus to release inorganic nutrients.

Thus, the correct answer is 'Humus.'

Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

Breakdown of detritus into smaller particles by earthworm is a process called

  1. Humification

  2. Fragmentation

  3. Mineralisation

  4. Catabolism
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Decomposition is the process of breaking of complex organic matter into simpler inorganic matter. There are five steps of decomposition. These are fragmentation, leaching, catabolism, humification and mineralization. Fragmentation is the process of breaking of detritus into small pieces by earthworm. Leaching is the process of releasing nutrients in the water and seeping into the soil. Catabolism is the process of breaking down of complex molecules into the simpler molecules. Humification is the process of formation of dark colored humus on the soil. MIneralization is the process of degradation of the hummus to release inorganic nutrients.

Thus, the correct answer is 'Fragmentation.'

Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

Breakdown of detritus into small particles by detrivores is called

  1. Leaching

  2. Humification

  3. Catabolism

  4. Mineralisation

  5. Fragmentation
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Decomposition is the process of breaking of complex organic matter into simpler inorganic matter. There are five steps of decomposition. These are fragmentation, leaching, catabolism, humification and mineralization. Fragmentation is the process of breaking of detritus into small pieces by detrivores. Leaching is the process of releasing nutrients in the water and seeping into the soil. Catabolism is the process of breaking down of complex molecules into the simpler molecules. Humification is the process of formation of dark colored humus on the soil. MIneralization is the process of degradation of the hummus to release inorganic nutrients.

Thus, the correct answer is 'Fragmentation.'

Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

The process of breakdown of detritus by detrivores is

  1. Mineralisation

  2. Fragmentation

  3. Leaching

  4. Humification
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Decomposition is the process of breaking of complex organic matter into simpler inorganic matter. There are five steps of decomposition. These are fragmentation, leaching, catabolism, humification and mineralization. Fragmentation is the process of breaking of detritus into small pieces by detrivores such as earthworm. Leaching is the process of releasing nutrients in the water and seeping into the soil. Catabolism is the process of breaking down of complex molecules into the simpler molecules. Humification is the process of formation of dark colored substance humus on the soil. It undergoes microbial action at a slow rate. Mineralization is the process of degradation of the hummus to release inorganic nutrients.

Thus, the correct answer is 'Fragmentation.'

Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

During the process of decomposition, in which stage complex organic matter is converted to inorganic ions and salts by fungi?

  1. Mineralization

  2. Catabolism

  3. Fragmentation

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mineralization in the process of decomposition in which complex organic matter is oxidized into soluble inorganic ions and salts. It increases bioavailability of the nutrients as soluble inorganic form is readily available to plants. The process is carried out by soil microorganisms like bacteria and fungi.

Thus, the correct answer is option A.

Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

The different steps involved in the process of decomposition of detritus are

  1. Fragmentation

  2. Leaching and Catabolism

  3. Humification and mineralization

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Decomposition is the process in which complex organic matter is broken down into inorganic raw materials with the help of decomposer. There are different steps involved in the process of decomposition of detritus like:
(1) Fragmentation: In this, complex organic matter is fragmented into smaller pieces by earthworms.
(2) Leaching: In this, water soluble nutrients penetrates into the soil layers and get locked as unavailable salts.
(3) Catabolism: In this, bacteria and fungi degrade detritus through various enzymes.
(4) Humification: This step results in the formation of a dark-coloured colloidal substance called humus. It is a reservoir of nutrients for plants.
(5) Mineralization: The humus is further degraded by the action of microbes and inorganic nutrients are released into the soil by the process of mineralization.
Thus, the correct answer is 'All of the above.'
Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

The ability to produce organic compound in unit time is

  1. Leaching

  2. Productivity

  3. Poaching

  4. Conductivity
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Productivity is the rate of production of new biomass by an individual, population. 
  • Productivity is a key source of economic growth and competitiveness.
  •  A country's ability to improve its standard of living depends almost entirely on its ability to raise its output per worker, i.e., producing more goods and services for a given number of hours of work.
  •  Hence, The ability to produce the organic compound in unit time is Productivity.
  • So, the correct answer is 'Productivity'.
Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

If breakdown of the detritus by detritivores is called fragmentation, then degradation of the detritus into simple inorganic substances,by bacterial and fungal enzymes is known as 

  1. Leaching

  2. Humifiacation

  3. Catabolism

  4. Mineralization
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

If the breakdown of the detritus by detrivores is called fragmentation, then the degradation of the detritus into simple inorganic substances, by bacterial and fungal enzymes is known as catabolism.

Leaching is the process by which the water-insoluble inorganic nutrients go down into soil horizon and get precipitated as unavailable salts.
Humification is the process of accumulation of a dark-colored amorphous substance called humus.
Mineralization is the process in which humus is further degraded by some microbes and release of inorganic nutrients occur.
So, the correct answer is 'Catabolism'.

Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

A large number of organic compounds can be decomposed by:

  1. Photoeterotorphs

  2. Pseudomonas

  3. Photolithotrophs

  4. Chemoheterotrophs
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chemoheterotrophs obtain energy and carbon from preformed organic compounds. They play a major role in decomposing a large variety of organic compounds in nature.