Prenatal Development Is Divided into Three Distinct but Continuous Periods

question 23

Multiple Choice

Prenatal development is divided into three distinct but continuous periods. In the correct developmental order following conception, these periods are

• A) ovum, zygote, and fetus.
• B) zygote, fetus, and ovum.
• C) germinal, embryo, and zygote.
• D) zygote, embryo, and fetus.

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Definitions:

Indicator Species

Species whose presence and abundance in a community provide information about conditions in the community.

Air Pollution

Contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere.

Pioneer Species

The first species to colonize barren environments or previously biodiverse steady-states disrupted by an event.

Nutrients

Substances that provide the necessary nourishment for organisms to carry out life processes, including vitamins, minerals, carbohydrates, proteins, and fats.