Which statement is FALSE?

Question

BlackTom AI · Accepted Answer

Here’s the evaluation of each statement in the context of microbiology and biogeochemical processes.
Option a: '_Rhizobium bacteria are involved with fixing atmospheric nitrogen for use by plants._' This is a true statement. Rhizobium species form symbiotic relationships with legume roots, creating nodules where atmospheric N2 is converted to forms (ammonia) usable by plants via biological nitrogen fixation. The claim aligns with established nitrogen cycle knowledge.
Option b: '_Microscopic fungi are not involved in the breakdown and recycling of organic matter._' This is false. In reality, microscopic fungi (fungi such as molds and yeasts) are central decomposers in ecosystems, breaking down complex organic materials like cellulose and lignin, and recycling nutrients back into the environment. Their role in saprotrophy is well documented, so stating they are not involved misrepresents their ecological function.
Option c: '_Saccharomyces yeast species can produce ethanol._' This is true. Saccharomyces cerevisiae and related yeasts carry out fermentation, converting sugars into ethanol and carbon dioxide, a process exploited in baking and brewing industries.
Option d: '_Marine bacteria can generate oxygen._' This is true in contexts where marine photosynthetic bacteria (and algae) perform photosynthesis, releasing O2 as a byproduct. While some bacteria contribute to oxygen production indirectly as part of photosynthetic communities, the general statement is supported by known marine photoautotrophs and the oxygen-generating processes in oceans.
Overall, only option b presents a misconception by denying the well-established role of fungi in organic matter decomposition, whereas the other statements correctly describe real biological processes.

Which statement is FALSE?

View Explanation

Log in for full answers

Similar Questions

Which of the following is not a function of microorganisms (as a whole) in an aquatic ecosystem?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

The CVP and break-even analysis are supported by a range of important assumptions. Which of the following is not an assumption of the CVP:

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler