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STD 12 - 11. organisms and populations — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 11. organisms and populations1 Mark
MCQ
Which one of the following factors is biotic
  • A
    Photoperiod
  • ✓
    $CO_2$ content to the soil
  • C
    Texture and porosity of soil
  • D
    Rainfall
✓

Answer

Correct option: B.
$CO_2$ content to the soil
b
(b) Because $CO_2$ is released through plants in soil by repiration process.

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