A Botanist Exposed Two Groups of the Same Plant Species

question 98

Multiple Choice

A botanist exposed two groups of the same plant species to two photoperiods-one with 14 hours of light and 10 hours of dark and the other with 10 hours of light and 14 hours of dark. Under the first set of conditions, the plants flowered, but they failed to flower under the second set of conditions. Which of the following conclusions would be consistent with these results?

• A) The critical night length is 14 hours.
• B) The plants are short-day plants.
• C) The critical day length is 10 hours.
• D) The plants can convert phytochrome to florigen.
• E) The plants flower in the late spring.

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Definitions:

Progressive Income Tax

A tax system where the tax rate increases as the taxable income of the taxpayer increases, aiming at a more equitable distribution of wealth.

After-Tax Lorenz Curve

A graphical representation that shows the distribution of income or wealth within an economy after accounting for taxes.

Before-Tax Lorenz Curve

A graphical representation that shows the distribution of income or wealth among individuals or households before taxes are applied.

Lorenz Curve

A graphical representation of income or wealth distribution within a society, showing the proportion of overall income earned by cumulative percentages of the population.