Why Do Biologists Categorize the Cue That Stimulates Young Herring

question 89

Multiple Choice

Why do biologists categorize the cue that stimulates young herring gulls to peck as a sign stimulus?

• A)because the pecking behaviour is completely instinctive
• B)because the pecking behaviour requires learning to perfect
• C)because the pecking behaviour appears both in the presence and absence of the cue
• D)because the pecking behaviour is triggered by presentation of the cue

---

Definitions:

Intercellular Junction

Specialized structures that connect adjacent cells together, facilitating communication and the passage of molecules between cells.

Small Molecules

Organic compounds with low molecular weight, often used in pharmacology for their ability to modulate biological processes.

Desmosome Junctions

Cell structures specialized for cell-to-cell adhesion, particularly in tissues subjected to mechanical stress, binding cells together to form a strong layer or sheet.