The Following Questions Refer to the Figure Above of a Capsella

question 21

Multiple Choice

The following questions refer to the figure above of a Capsella seed.
-What causes the hypocotyl of dicots to straighten?

• A) Light.
• B) Gravity.
• C) Wind.
• D) Air.
• E) All of these may be involved.

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Definitions:

Placebo Control Procedure

A method used in research where a group of participants receives a sham treatment, allowing for comparison with a group receiving the actual treatment to determine its effect.

Stereotaxic Procedure

A surgical technique that allows precise positioning of instruments or lesions within the brain using a three-dimensional coordinate system.

Single-Blind Procedure

A research experiment in which only the participants do not know which group (control or experimental) they belong to.

Placebo Effect

The beneficial effect on a patient's health condition following a placebo treatment, due to the patient's belief in the treatment's efficacy.