Ontario Grade 9 Science Class Practice Exam 2025 - Free Grade 9 Science Practice Questions and Study Guide

Question: 1 / 400

What is the role of fungal and bacterial decomposers in the nitrogen cycle?

They convert inorganic nitrates into nitrogen gas

They absorb nitrates into plant roots

They break down organic nitrogen into inorganic ammonium

Fungal and bacterial decomposers play a crucial role in the nitrogen cycle by breaking down organic nitrogen, found in dead plants and animals, into inorganic ammonium. This process, known as ammonification, releases nitrogen in a form that can be used by plants to grow and thrive. Option A is incorrect because it refers to denitrification, where bacteria convert nitrates into nitrogen gas. Option B is incorrect because it describes the process of nitrification, where nitrates are absorbed by plant roots. Option D is incorrect because it also refers to nitrification, where bacteria convert ammonia into nitrate ions. It is important to note that while these processes are important in the nitrogen cycle, they are not the specific role of fungal and bacterial decomposers. Overall, option C is the correct answer as it accurately describes the role of these decomposers in breaking down organic nitrogen

Get further explanation with Examzify DeepDiveBeta

They convert ammonia into nitrate ions

Next Question

Report this question

Download Ontario Grade 9 Science Class Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy