Why do plants containing nitrogen-fixing bacteria in their roots need less nitrogen-based fertilizer than others?
A) The plants break down the bacteria as a source of nitrogen-rich nutrients.
B) The bacteria convert nitrogen in the air into a form that can be taken up by the plants.
C) The plants and bacteria work together to attract birds, which deposit nitrogen-rich droppings near the plant.
D) The bacteria kill and digest earthworms and other animals in the soil, providing excess nitrogen to the plants.

Question

Quizplus · Accepted Answer

Nitrogen fixation is the process by which certain bacteria convert atmospheric nitrogen (N2) into ammonia (NH3), which can then be used by plants to make organic compounds like proteins and DNA. Plants that contain these bacteria in their roots, such as legumes, have a symbiotic relationship with them. The bacteria provide the plant with usable nitrogen, reducing the need for nitrogen-based fertilizer.

Why Do Plants Containing Nitrogen-Fixing Bacteria in Their Roots Need