Plants Extract Phosphate from the Soil

question 40

Multiple Choice

Plants extract phosphate from the soil

• A)by converting it to the dihydrogen phosphate ion by addition of acid to the soil near roots.
• B)by converting it to phosphoric acid.
• C)by osmosis.
• D)by leaching.
• E)by fixation.

---

Definitions:

Mean Absolute Deviation

A statistical measure of the average magnitude of deviations from the mean, used to assess variability.

Exponential Smoothing

a forecasting technique that applies decreasing weights to past observations, giving more importance to recent data for future predictions.

Alpha Value

A statistical concept that represents the level of significance in hypothesis testing, commonly set at 0.05 or 5%, indicating the probability of rejecting a true null hypothesis.

Correlation Coefficient

A statistical measure that indicates the extent to which two or more variables fluctuate together.