MCQs - 2026-03

The long-term health of marine ecosystems depends on significant global efforts to curb greenhouse gas emissions.

Developing more resilient aquaculture species and implementing sustainable fishing practices are mentioned as adaptation strategies.

Urgent action is needed to reduce CO2 emissions, the primary driver of ocean acidification.

Economic consequences include declining fish stocks, reduced livelihoods, and impact on food security.

Ocean acidification can affect the physiology, behavior, and sensory capabilities of fish.

Pteropods are a vital food source for many commercially important fish species.

The larval stages of shellfish are particularly vulnerable to ocean acidification.

Dolphins are not directly mentioned as being negatively impacted by ocean acidification in the text, unlike corals, shellfish, and pteropods.

Ocean acidification reduces the availability of carbonate ions, which are essential for shell and skeleton formation.

Ocean acidification is primarily caused by the absorption of excess atmospheric CO2 into the oceans.