You Plant a Seed in a Pot Containing Soil,and Then

question 53

Multiple Choice

You plant a seed in a pot containing soil,and then add water and place the pot under a light.After the seedling emerged,complete with two green leaves,the carbon dioxide levels decreased in the closed chamber.The developing seedling was using which of the following as a source of energy while the carbon dioxide levels were decreasing?

• A) water from the soil
• B) starch from the seed
• C) sugars from the soil
• D) nutrients from the soil
• E) light

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Definitions:

Percentiles

Statistical measures indicating the value below which a given percentage of observations in a group of observations falls.

Interquartile Range

A measure of variability, defined as the difference between the first and third quartiles, describing the middle 50% of a data set.

25th Percentile

A value below which 25% of the data falls.

75th Percentile

A value below which 75% of the data points in a dataset fall, used as a measure of dispersion.