Tag: producers, consumers and decomposers

Questions Related to producers, consumers and decomposers

Breakdown of organic matter is known as:

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

  1. Decomposition

  2. Condensation

  3. Precipitation

  4. Infiltration

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Correct Option: A

Lowest 'pH' measurement observed in kane and Pennsylvania, was approximately

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

  1. 2.9

  2. 4

  3. 3

  4. 2.7

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Correct Option: D

Bacterial decomposition of organic matter, releases $NO _{2}$ into

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

  1. Stratosphere

  2. Troposphere

  3. Atmosphere

  4. Biosphere

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Correct Option: C

Obnoxious ordours also pollute air due to decomposition of ____________.

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

  1. Garbage

  2. Rubbish

  3. Air pollution

  4. Organic solid waste

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Correct Option: D

Which bacteria can flourish and carry out decomposition of organic matter, both in presence and absence of oxygen?

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

  1. Facultative Bacteria

  2. Aerobic Bacteria

  3. Anaerobic Bacteria

  4. Blue green algae

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Correct Option: A

'Aerobic' decomposition takes place in

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

  1. Two stages

  2. Three stages

  3. Four Stages

  4. Five stages

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Correct Option: A

In first stage of aerobic decomposition, carbonaceous matter is being

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

  1. Reduced

  2. Oxidized

  3. Formed

  4. Decomposed

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Correct Option: B

The plant parts when fully decomposed by microorganism and mixed in the soil is caIled as

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

  1. Litter

  2. Duff

  3. Humus

  4. All of the above

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Correct Option: C
Explanation:

Humus is a dark-brown or black organic substance made up of decayed plant or animal matter which are fully decomposed by microorganisms like bacteria. Humus provides nutrients for plants and increases the ability of soil to retain water. It has a characteristic black or dark brown color and is organic due to an accumulation of organic carbon. 

Therefore, the correct answer is option C.

Humus is 

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

  1. Dead and decayed organic matter

  2. Living matter

  3. Fertilizers

  4. Living animal, plants and microbes

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Correct Option: A
Explanation:

Humus is dark, organic material that forms in soil when plant and animal matter decays. When plants drop leaves, twigs, and other material to the ground, it piles up. This material is called leaf litter. When animals die, their remains add to the litter. The thick brown or black substance that remains after most of the organic litter has decomposed is called as humus. Humus contains many useful nutrients for healthy soil. 

The slow rate of decomposition of fallen Iogs in nature is due to their

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

  1. Anaerobic environment around them

  2. Low cellulose content

  3. Low moisture content

  4. Poor nitrogen content

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Correct Option: C
Explanation:

Photosynthetically fixed carbon is eventually degraded by micro-organisms and two major forms of carbon known as methane and carbon dioxide. The micro-organisms breakdown the complex compounds of dead protoplasm of producers compounds of dead protoplasm of producers and consumers absorb some of the decomposition products and release simple substances. The slow rate of decomposition of fallen logs in nature is because of low moisture content.

Therefore, the correct answer is option C.