MCQ
Pheretima posthuma is highly useful as:
  • A
    Their burrows make the soil loose.
  • They make the soil porous, leave their castings and take organic debris in the soil.
  • C
    They are used as fish meal.
  • D
    They kill the birds due to biomagnification of chlorinated hydrocarbons.

Answer

Correct option: B.
They make the soil porous, leave their castings and take organic debris in the soil.

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