Question

select all that apply
which of the following describe selective media?
☐ suppress unwanted organisms
☐ encourage the growth of desired organisms
☐ display visible differences among microorganisms
☐ select for growth of a broad spectrum of organisms
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Explanation:

• Selective media is designed to suppress unwanted organisms (by including inhibitors) and encourage the growth of desired organisms (by providing suitable nutrients/conditions for them).
• "Display visible differences among microorganisms" is a characteristic of differential media, not selective.
• "Select for growth of a broad spectrum of organisms" is not selective (selective narrows down growth to desired types).

Answer:

• A. Suppress unwanted organisms
• B. Encourage the growth of desired organisms