The Predatory Fish Rely on Visual Cues and Speed to Capture

question 39

Multiple Choice

The predatory fish rely on visual cues and speed to capture mosquitofish. Mosquitofish rely on speed and visual cues to avoid the predatory fish. Which adaptation(s) might help the predators survive in ponds that are home to faster mosquitofish?
1) directional selection for increased speed
2) stabilizing selection for speed that matches that of the mosquitofish
3) change in hunting behavior that replaces reliance on visual cues with reliance on tactile cues, which can be used to hunt at night
4) change in hunting behavior that eliminates speed in favor of better camouflage, which permits an ambush strategy

• A) 1 only
• B) 2 only
• C) either 1 or 3
• D) either 2 or 3
• E) 1, 3, or 4

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Definitions:

Economic Policies

Government measures applied to control the economy of a country, including fiscal policy, monetary policy, and trade policy.

National Debt

The total amount of money that a country's government has borrowed, by various means.

Budget Deficit

The financial shortfall when a government's expenditures exceed its revenues within a given fiscal period, leading to borrowing or debt accumulation.

Economic Crises

Periods of significant decline in economic activity spread across the economy, lasting more than a few months, and are normally visible in real GDP, real income, employment, industrial production.