Row Characteristic Classification A mass of seeds continuous B ability to roll the tongue discontinuous C hand span continuous D ABO blood group continuous ...
Question 1 Report
| Row | Characteristic | Classification |
| A | mass of seeds | continuous |
| B | ability to roll the tongue | discontinuous |
| C | hand span | continuous |
| D | ABO blood group | continuous |
Each row of the table classifies a characteristic as showing continuous or discontinuous variation. Which row is incorrect?
Answer Details
The task is to find the wrongly classified row. ABO blood group falls into distinct categories (A, B, AB, O) with no intermediates, so it is discontinuous variation, but the row labels it continuous, making that row incorrect. The other rows are right: seed mass and hand span vary smoothly (continuous), and tongue rolling is either/or (discontinuous). So the blood-group row is the mistaken classification.
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