Respiratory organ of scorpion is(1)Book-lungs(2)Book-gills(3)Buccal cavity(4)Lungs

Breakdown of the Problem

To determine the respiratory organ of a scorpion, let's evaluate the options provided.

Relevant Concepts

1. Book-lungs: Found in arachnids, these structures are involved in gas exchange.
2. Book-gills: Present in some aquatic arthropods, important for respiration in water.
3. Buccal cavity: The cavity located inside the mouth, primarily involved in ingestion.
4. Lungs: Organs used in respiration in many terrestrial animals.

Analysis and Detail

• Scorpions are terrestrial arachnids that breathe air.
• They possess book-lungs, which are a unique adaptation for respiration. These organs are layered structures that allow for efficient gas exchange.

Verify and Summarize

Since we have identified that book-lungs are specifically adapted for air breathing in scorpions, this can be concluded without further verification as the other options do not apply to scorpions.

Final Answer

The respiratory organ of a scorpion is (1) Book-lungs.