Two Petri Dishes of Radish Seeds Are Prepared as Follows $\begin{array}{llcc} \text {- starting dry weight } &2.00g\\ \text { - sunny windowsill } &2.25g\\ \text { - dark cupboard} &1.75g\\\end{array}$

question 49

Multiple Choice

Two petri dishes of radish seeds are prepared as follows: a disk of absorbent, but otherwise inert, filter paper is placed in the bottom of each dish and 5 mL of distilled water are added to each disk, then 2 grams of dry radish seeds are spread over each moist disk. One dish is put in a dark cupboard and the other is put on a sunny windowsill. The investigator checks the dishes daily and adds water equally as needed. Seeds in both treatments germinate within 2 days. At the end of 10 days, the plant material on each petri plate is dried and weighed. The results are: - $\begin{array}{llcc} \text {- starting dry weight } &2.00g\\ \text { - sunny windowsill } &2.25g\\ \text { - dark cupboard} &1.75g\\\end{array}$

What is the MOST likely explanation for why the dark-grown seedlings lost biomass?

• A)The metabolism in the cells of the seedlings increased to compensate for the lack of light energy.
• B)Cellular respiration in the cells of the seedlings consumed the starch and oils present in the seeds as sources of energy.
• C)Cellular respiration and ATP synthesis needed for growth does not occur as efficiently in plants in the dark as in plants exposed to light.

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Industry Average

A statistical measure that represents the central tendency or typical value of a set of figures in a particular industry, often used for benchmarking.

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The state in which an individual or entity cannot meet its financial obligations as debts become due.

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The difference between a company's current assets and current liabilities, indicating the liquidity of a business.

Benjamin Graham

Widely recognized as the father of value investing, he was an economist, professional investor, and Columbia Business School professor.