Additional Air Chambers in the Stems and Roots of Cattails

question 18

Multiple Choice

Additional air chambers in the stems and roots of cattails allow it to survive when exposed to

• A) drought.
• B) fire.
• C) frost.
• D) wetland conditions.

---

Definitions:

Unconditioned Stimulus

In classical conditioning, a stimulus that unconditionally—naturally and automatically—triggers a response without prior conditioning.

Unconditioned Response

In classical conditioning, the automatic and natural reaction elicited by the unconditioned stimulus.

Neutral Stimulus

A neutral stimulus is a stimulus that initially produces no specific response other than focusing attention, until it is paired with an unconditioned stimulus.

Unconditioned Stimulus

In classical conditioning, an unconditioned stimulus is anything that naturally and automatically triggers a response without any learning needed.