Water Fleas, Daphnia Magna, Can Switch Between Asexual and Sexual

question 34

Multiple Choice

Water fleas, Daphnia magna, can switch between asexual and sexual reproduction cycles. Which of the following observations support the hypothesis that sex is favored in unpredictable environments?

• A) The introduction of predators triggers sexual reproduction.
• B) D. magna reproduces asexually every other generation in a variety of habitats.
• C) D. magna reproduces sexually when in stable water conditions.
• D) Asexual D. magna strains outcompete introduced competitors.

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Definitions:

Stock Dividend

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Cash Dividend

A payment made by a company out of its profits to shareholders, usually in the form of cash.

Common Stock

The most prevalent form of equity ownership, representing shares in the ownership of a company.

Dividend Decision

The decision by management regarding the portion of earnings paid to shareholders as dividends. The alternative is to retain the money, investing it in the company for future growth.