Tetrapods Colonized Land at About the Same Time as the Early

question 11

Multiple Choice

Tetrapods colonized land at about the same time as the early _____ radiations around _____ million years ago.

• A)plant; 579
• B)hemichordate; 542
• C)arthropod; 420
• D)insect; 360
• E)plant; 100

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Definitions:

Arabidopsis

A model organism in plant genetics and molecular biology, known scientifically as Arabidopsis thaliana, used for studying the mechanisms of genetics, development, and physiology.

Primary Root

The initial root that develops from a germinating seed, giving rise to the root system of a plant.

Hemicellulose

A polysaccharide found in plant cell walls alongside cellulose, providing structural support.

Cellulose

A complex carbohydrate composed of glucose units that form the main constituent of the cell wall in most plants, providing structural support.