If Two Different Species of Fish Fossils Were Found in Two

question 62

Multiple Choice

If two different species of fish fossils were found in two different layers of sedimentary rock, what might one infer about the specimens?

• A)The species in lower layer died first
• B)They died at the same time
• C)The species in the higher layer evolved from the species in the lower layer
• D)The species in the higher layer died first

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Definitions:

Prostaglandins

A group of lipid compounds that have diverse hormone-like effects in animals, including involvement in inflammation and pain management.

Cryptochrome

A class of flavoproteins that are sensitive to blue light and found in plants and animals, playing a role in the regulation of circadian rhythms.

Blue Light

A portion of the visible light spectrum, ranging approximately from 380 to 500 nm in wavelength, known for its high energy and effects on plants and human health.

Long Day Plant

A type of plant that requires more than a specific length of daylight (usually more than 12 hours) to initiate flowering.