Question

Leguminous plants are important in agriculture because

• A. They are disease resistant
• B. They have high amounts of proteins
• C. They require less nitrogen for growth
• D. Nitrogen fixing bacteria are symbiotically associated in them

Answer 1

The correct option is D Nitrogen fixing bacteria are symbiotically associated in them

Leguminous plants are important in agriculture because they contribute to nitrogen fixation. They contain symbiotic nitrogen-fixing bacteria within the nodules that produce nitrogen compounds that help the plant to grow. When the plant dies, the fixed nitrogen is released, making it available to other plants and this helps to fertilize the soil.

So the correct answer is 'Nitrogen-fixing bacteria are symbiotically associated in them'.