Multiple choice

Leguminous plants help in the replenishment of the soil with

  1. oxygen

  2. nitrogen

  3. hydrogen

  4. carbon dioxide

  5. helium

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rhizobium is present in the root nodules of leguminous plants. These bacteria convert atmospheric nitrogen into simpler nitrogen compounds that can be easily absorbed by plants. Hence, it is the correct answer.