Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks.

Options:

A B C

D

 

  • Option 1)

    Rock minerals

    Detritus Litter Fall

    Producers

     

  • Option 2)

    Litter fall

    Producers

    Rock Minerals

    Detritus

     

  • Option 3)

    Detritus

    Rock minerals Producer

    Litter fall

     

  • Option 4)

    Producers

    Litter fall

    Rock Minerals

    Detritus

     

 

Answers (1)

 

Phosphorus Cycle -

Phosphorus is a major constituent of biological membranes, nucleic acids and cellular energy transfer systems. Many animals also need large quantities of this element to make shells, bones and teeth.  

 

- wherein

The natural reservoir of phosphorus is rock, which contains phosphorus in the form of phosphates. When rocks are weathered, minute amounts of these phosphates dissolve in soil solution and are absorbed by the roots of the plants.

 

 


Option 1)

Rock minerals

Detritus Litter Fall

Producers

 

This option is incorrect.

Option 2)

Litter fall

Producers

Rock Minerals

Detritus

 

This option is incorrect.

Option 3)

Detritus

Rock minerals Producer

Litter fall

 

This option is correct.

Option 4)

Producers

Litter fall

Rock Minerals

Detritus

 

This option is incorrect.

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