How Did Clever Hans Solve Arithmetic Problems?​

question 50

Multiple Choice

How did Clever Hans solve arithmetic problems?​

• A)He memorized the answer to each question by long practice.
• B)​He watched the questioner for facial cues.
• C)​He listened for the questioner to clear his throat.
• D)​He guessed correctly only by accident.

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Definitions:

Ground Meristem

The part of a plant embryo that develops into the ground tissue of the plant, which includes the cortex and pith.

Procambium

A primary meristematic tissue in plants, which differentiates into vascular tissues (xylem and phloem).

Primary Xylem

The part of the xylem (the vascular tissue in plants that conducts water and dissolved nutrients upward from the root) that forms first, mainly in seedlings and young plants.

Secondary Xylem

The part of a plant that contributes to the growth of stem thickness and acts as a conduit for water and nutrients.