Oceanography and its impact on marine life MCQs

By: Prof. Dr. Fazal Rehman | Last updated: June 11, 2025

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1. : Which oceanographic phenomenon is primarily responsible for the distribution of marine nutrients?



2. : The study of ocean currents falls under which branch of oceanography?



3. : What is the primary driver of surface ocean currents?



4. : Which phenomenon causes a significant increase in sea surface temperatures across the central and eastern Pacific Ocean?



5. : How does ocean acidification impact marine life?



6. : Which factor primarily influences the vertical distribution of marine life in the ocean?



7. : What is the primary source of energy for marine ecosystems?



8. : Which oceanographic process affects the global climate by redistributing heat?



9. : What is the term for the large-scale movement of water within the ocean, driven by differences in temperature and salinity?



10. : Which of the following is a key consequence of sea level rise?



11. : What role do phytoplankton play in marine ecosystems?



12. : Which oceanographic factor is crucial for the formation of coral reefs?



13. : What is the main effect of ocean stratification on marine life?



14. : How do ocean currents influence global climate patterns?



15. : Which of the following processes contributes to the carbon cycle in marine environments?



16. : Which technique is commonly used to study the movement of marine animals?



17. : What impact does increased sea surface temperature have on marine ecosystems?



18. : Which phenomenon is associated with the cooling of sea surface temperatures in the central and eastern Pacific Ocean?



19. : What is the role of deep-sea hydrothermal vents in marine ecosystems?



20. : Which factor contributes to the formation of oceanic gyres?



21. : How does oceanography help in understanding marine pollution?



22. : Which of the following is a consequence of ocean deoxygenation?



23. : What impact does ocean noise pollution have on marine species?



24. : Which oceanographic tool is used to measure sea surface temperatures?



25. : What is the primary source of deep-sea nutrients in oligotrophic regions?



26. : What effect does coastal upwelling have on marine life?



27. : Which phenomenon causes the warming of sea surface temperatures in the Indian Ocean and surrounding regions?



28. : How do changes in sea ice cover affect marine ecosystems?



29. : What role do marine phytoplankton play in the ocean’s carbon cycle?



30. : Which of the following is a key method for studying ocean temperatures and currents?



 

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