Compared to Life Today the Rate of Diversification in Early

question 103

Multiple Choice

Compared to life today the rate of diversification in early organism was probably

• A) exactly the same as it is today
• B) much slower than it is today
• C) much faster than it is today
• D) just slightly slower than it is today

Identify exceptions to common traits in animal phyla, such as animals without a coelom.

Distinguish between protostomes and deuterostomes based on their traits and development.

Comprehend the significance of bilateral symmetry and cephalization in animal evolution.

Recognize the significance of the body cavity (coelom) in the organization and evolution of animals.

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Definitions:

Intrusive Rock

An igneous rock that solidified from magma below Earth’s surface; synonym: plutonic rock.

Extrusive Rock

An igneous rock that forms when magma is erupted onto Earth’s surface; synonymous with volcanic rock.

Igneous Rock

Stone generated by the hardening and crystallization of molten rock material.

Bowens Reaction Series

Bowen's Reaction Series describes the sequence in which minerals crystallize from cooling magma according to their chemical composition and temperature.