Question

question 78
the organisms that can convert atmospheric nitrogen gas to a form that can be utilized by plants are ______.
○ animals
○ bacteria
○ protists
○ fungi

Explanation:

Nitrogen - fixing bacteria are crucial in the nitrogen cycle. They convert atmospheric nitrogen (\(N_2\)) into ammonia (\(NH_3\)) or other nitrogen - containing compounds that plants can absorb and use for growth. Animals mainly consume plants or other animals and do not have the ability to fix atmospheric nitrogen. Protists have various functions such as being decomposers or part of aquatic food chains but are not known for nitrogen fixation. Fungi are important in decomposition and symbiotic relationships (e.g., mycorrhizae) but do not fix atmospheric nitrogen.

Answer:

B. bacteria