Question

A farmer planted legumes and cabbage in the same field that is devoid of fertilizers. The yield from this field is better than the cabbage planted in another field without legumes. Why?. a.nitrogen-fixing present in the roots of legumes aid enrichment of nitrogen in the soil.. b.nitrogen-fixing bacteria present in the roots of legumes inhibit the growth of weeds or unwanted plants.. c.nitrogen-fixing bacteria present in the roots of legumes prevent bacterial growth that cause root disease.

Answer 1

Answer:

Option A. Nitrogen-fixing present in the roots of legumes aid enrichment of nitrogen in the soil.

Explanation:

Legumes have symbiotic Rhizobium bacteria in their root nodules. The bacteria serve in nitrogen fixation and makes the nitrogen available to plants. When farmer planted legumes and cabbage in the same field that is devoid of fertilizers, nitrogen was made available to the crop by nitrogen fixing bacteria present in root nodules of legumes. This resulted in better growth of cabbage in the field even without any application of fertilizer.

Answer 2

The correct answer for this question is:
A farmer planted legumes and cabbage in the same field that is devoid of fertilizers. The yield from this field is better than the cabbage planted inanother field without legumes. The reason for this is because (A) nitrogen-fixing present in the roots of legumes aid enrichment of nitrogen in the soil.