Ecology Review

Front

What is the role of bacteria in the nitrogen cycle?

Back

Bacteria play a crucial role in the nitrogen cycle by converting atmospheric nitrogen into forms that plants can absorb and use, such as ammonium and nitrates.

Front

What process removes carbon dioxide from the atmosphere and converts it into organic compounds?

Back

Photosynthesis is the process that removes carbon dioxide from the atmosphere and uses it to produce organic compounds, primarily glucose, in plants.

Front

What happens to a population of mosquito larvae when mosquitofish are introduced?

Back

The introduction of mosquitofish, which eat mosquito larvae, leads to an increase in deaths among the mosquito larvae population.

Front

What does it mean when the birth and immigration rates equal the death and emigration rates in a population?

Back

It indicates that the population size is stable, as the number of individuals entering the population is equal to the number leaving.

Front

What effect does an increase in the birth rate of cardinals have on their population?

Back

An increase in the birth rate of cardinals will lead to a larger population size in the forest.

Front

Define 'immigration' in an ecological context.

Back

Immigration refers to the arrival of individuals into a population from other areas, contributing to population growth.

Front

Define 'emigration' in an ecological context.

Back

Emigration is the process of individuals leaving a population to live in another area, which can decrease the population size.

Front

What is the significance of photosynthesis in ecosystems?

Back

Photosynthesis is vital for ecosystems as it provides the primary source of energy for plants, which are the foundation of food webs.

Front

How do predators affect prey populations?

Back

Predators can decrease prey populations by increasing the death rate of the prey, which can lead to changes in the ecosystem dynamics.

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including atmospheric nitrogen, ammonium, nitrates, and organic nitrogen.