Concept explainers
Introduction:
The humans are connected with a vast array of microbes known as resident biota. A holobiont includes the human body along with resident biota. These microbes of resident biota also prevent the overgrowth of harmful microorganisms.
Answer to Problem 1MCQ
Correct answer:
The best descriptive term for the resident biota is commensals. Therefore, option (a) is correct.
Option (a) is given as “commensals”.
Explanation of Solution
Justify reasons for the correct statement:
Some organisms show evolution along with its human hosts and produce a complex relationship in which the effects of normal biota are not deleterious to the host. Normal biota is generally either in a commensal or mutualistic association with their hosts because microbes exist in different kinds of relationships with their hosts.
Hence, option (a) is correct.
Justify reasons for the incorrect statements:
Option (b) is given as “
The parasites are the organisms which can live on host body, but they do not live in commensals like microorganisms. Hence, it is a wrong answer.
Option (c) is given as “pathogens”.
Not all pathogens live in commensals. Only some microorganisms live in commensals. Hence, it is a wrong answer.
Option (d) is given as “mutualists”.
Mutualists are the organisms which live in a relationship such that both the organisms are benefitted. Hence, it is a wrong answer.
Hence, options (b),(c), and(d) are incorrect.
The commensals are the microorganisms which live in a group. The resident biotas are also commensals.
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Chapter 13 Solutions
Microbiology: A Systems Approach
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