Biology
Grade-8
Easy
Question
The element present in atmosphere but still in unavailable form to plants is _________.
- Sulfur
- Nitrogen
- Carbon
- Oxygen
Hint:
The element present in atmosphere but still in unavailable form to plants is nitrogen.
The correct answer is: Nitrogen
- Nitrogen is one of the most abundant element in atmosphere, about 78%.
- But due to inappropriate for form, plants can't absorb nitrogen.
- Rhizobium bacteria of leguminous plants traps atmospheric nitrogen.
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