Gause's Experiments with Paramecium and Didinium Showed

question 18

Multiple Choice

Gause's experiments with Paramecium and Didinium showed

• A) extinction of the predator, followed by extinction of the prey, in all habitats.
• B) coexistence of predator and prey at fairly constant population sizes, in all habitats.
• C) coexistence of predator and prey, but with oscillating population sizes, in all habitats.
• D) coexistence of predator and prey at fairly constant population sizes, but only in the presence of refuges and predator reservoirs.
• E) coexistence of predator and prey with oscillating population sizes, but only in the presence of refuges and predator reservoirs.

---

Definitions:

October

The tenth month of the year in the Gregorian calendar, often associated with the autumn season in the Northern hemisphere and spring in the Southern hemisphere.

Government Policy

Decisions and actions taken by a government to achieve certain goals, which can relate to domestic or international issues, including economy, health, defense, and environment.

Petrograd

The name given to the city of Saint Petersburg, Russia, between 1914 and 1924, especially noted during the Russian Revolution.

Food Shortages

A situation in which the supply of food is insufficient to meet the demand, often resulting in hunger, malnutrition, and increased food prices.