Which Type of Organisms Were Likely the First Land Animals

question 32

Multiple Choice

Which type of organisms were likely the first land animals?

• A) birds
• B) reptiles
• C) mammals
• D) amphibians
• E) arthropods

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Definitions:

Thoracic Cavity

The chamber of the body of vertebrates that is protected by the thoracic wall and contains the lungs and heart.

Ventral Cavity

A large body cavity that houses many organs, including those in the thoracic and abdominal regions.

Feedback Mechanism

A process in biological and mechanical systems where the system's output is fed back into the system as input, adjusting its performance to meet a desired goal.

Effector

An organ or cell that acts in response to a stimulus, often involved in muscle contraction or gland secretion.