The Embryo of a Grass Seed Is Enclosed by Two

question 3

Multiple Choice

The embryo of a grass seed is enclosed by two protective sheaths, a(n) ________, which covers the young shoot, and a(n) ________, which covers the young root.

• A) cotyledon; radicle
• B) hypocotyl; epicotyl
• C) coleoptile; coleorhiza
• D) scutellum; coleoptile
• E) epicotyl; radicle

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Definitions:

Placebo Control Group

In a therapy outcome study, group of people whose treatment is an inactive substance (to compare with the effects of a drug) or a nontheory-based therapy providing social support (to compare with the effects of psychotherapy).

Ethical Problem

A situation that requires a person to choose between alternatives that must be evaluated as right (ethical) or wrong (unethical).

Withholding Treatment

The ethical and medical decision not to administer a specific medical treatment to a patient, often under circumstances where the treatment will not improve quality of life or extend it in a meaningful way.

Demand Characteristics

Factors in an experiment that suggest to participants how the experimenter would like them to behave.