By the Beginning of the 20^th Century,a Greater Percentage of Americans

question 24

Multiple Choice

By the beginning of the 20^th century,a greater percentage of Americans were addicted to opioids than at any time before or since.Opium smoking and medical use of injected pure morphine were important contributors to this,along with

• A)intravenous use of heroin.
• B)the growth of organized crime syndicates.
• C)patent medicines containing opium extracts or morphine.
• D)alcohol prohibition.

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Definitions:

Monocot Embryo

An embryo from a monocotyledonous plant, characterized by having a single cotyledon (seed leaf).

Coleoptile

The protective sheath covering the emerging shoot in monocotyledons, such as grasses and cereals.

Eudicot Cotyledon

One of the two major groups of angiosperms (flowering plants) characterized by embryos with two cotyledons or "seed leaves."

Triploid Endosperm

A tissue in seeds of flowering plants that is formed during fertilization and nourishes the developing embryo with a triple set of chromosomes.