Question:
Which of the following pair of organisms are euryhaline in nature?
Which of the following pair of organisms are euryhaline in nature?
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Euryhaline = wide salinity tolerance. Marine intertidal organisms like barnacles are classic examples.
Updated On: May 4, 2026
- Catla and clams
- Barnacles and Labeo
- Mrigala and barnacles
- barnacles
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The Correct Option is D
Solution and Explanation
Concept:
Euryhaline organisms can tolerate a wide range of salinity, whereas stenohaline organisms cannot.
Step 1: Understand examples.
• Barnacles → Euryhaline (tolerate varying salinity)
• Catla, Labeo, Mrigala → Freshwater fishes (stenohaline)
Step 2: Analyze options.
• (A) Catla and clams → Catla is stenohaline $\times$
• (B) Barnacles and Labeo → Labeo is stenohaline $\times$
• (C) Mrigala and barnacles → Mrigala is stenohaline $\times$
• (D) Barnacles → Correct euryhaline organism \checkmark
Step 3: Conclusion. \[ \text{Barnacles are euryhaline organisms} \]
Euryhaline organisms can tolerate a wide range of salinity, whereas stenohaline organisms cannot.
Step 1: Understand examples.
• Barnacles → Euryhaline (tolerate varying salinity)
• Catla, Labeo, Mrigala → Freshwater fishes (stenohaline)
Step 2: Analyze options.
• (A) Catla and clams → Catla is stenohaline $\times$
• (B) Barnacles and Labeo → Labeo is stenohaline $\times$
• (C) Mrigala and barnacles → Mrigala is stenohaline $\times$
• (D) Barnacles → Correct euryhaline organism \checkmark
Step 3: Conclusion. \[ \text{Barnacles are euryhaline organisms} \]
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