Which of the Following Observations Most Strongly Supports the Common

question 39

Multiple Choice

Which of the following observations most strongly supports the common origin of all life on Earth?

• A) All organisms require energy.
• B) All organisms use essentially the same genetic code.
• C) All organisms reproduce.
• D) All organisms show variation that is inherited.

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Definitions:

Vascular Tissues

Specialized structures in plants that conduct water, nutrients, and sugars throughout the organism.

Free-Living Gametophytes

Independent gametophyte plants that do not depend on the sporophyte generation for their lifecycle, typical in some plant groups such as bryophytes.

Reproductively Superior

Having genetic or physiological attributes that enhance an organism's ability to reproduce and pass on genes to the next generation.

Multicellular

Consisting of more than one cell, characteristic of most living organisms excluding bacteria and certain algae.