A Researcher Reports He Has Conducted Many Experiments Where a Galvanometer

question 1

Multiple Choice

A researcher reports he has conducted many experiments where a galvanometer (lie detector) was hooked up to detect a plant's responses. He reports that when a spider was released near the plant, the spider's decision to escape was picked up by the plant, "causing a reaction in the leaf." When other researchers repeated the experiment, they could not get any galvanometer responses. The researcher then concluded that plants could be put into a faint by humans.

• A) This is a justified conclusion from a research design that appears to follow the scientific method.
• B) The only problem with this general research plan is that it lacks a control.
• C) Results must be somewhat repeatable and these results that only work for this researcher do not qualify as science.
• D) The design is scientific; it just lacks a hypothesis.
• E) If the researcher has actual numerical counts, this must be accepted as valid science.

---

Definitions:

Negative Lead

An electrical connection that serves as the return path for current in a circuit, often marked with a minus (-) symbol or black color in electronics.

DMM

Digital Multimeter, an electronic measuring instrument that combines multiple measurement functions in one unit, such as voltage, current, and resistance.

Voltage Measurement

The process of determining the electrical potential difference between two points in an electric circuit.

Continuity

In electrical systems, the unbroken and complete path for current flow, crucial for the safe and effective operation of circuits.