Which of the Following Is Reflected in a Population Pyramid

question 129

Multiple Choice

Which of the following is reflected in a population pyramid that narrows toward the top?

• A) Most people in that population are very young.
• B) Most people in that population die before they reach old age.
• C) Most people in that population are in middle age.
• D) Most infants in that population die before they reach adulthood.

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Definitions:

Primary Germ Layers

The three initial layers of cells (ectoderm, mesoderm, and endoderm) in the early embryo from which all bodily tissues and organs develop.

Digestive Organs

Organs involved in the digestion process, including the mouth, esophagus, stomach, liver, gallbladder, pancreas, intestines, rectum, and anus.

Respiratory Organs

Organs involved in the process of breathing, including the nose, throat, larynx, trachea, bronchi, and lungs.

Extraembryonic Membrane

Membranes that support the development of the embryo, such as the amnion and chorion.