Ecology Test Review

Front

What type of succession occurs in an area where a disturbance has destroyed a community but left the soil intact?

Back

Secondary succession.

Front

What is an invasive species?

Back

An organism that is new to an environment that has negative effects on the environment.

Front

What is the likely effect of a sudden increase in the population of a primary consumer, such as crickets?

Back

There would be a decrease in the grass/flowers population.

Front

What role do bacteria play in the nitrogen cycle?

Back

Bacteria convert nitrogen gas into a usable form for plants and animals.

Front

What is a keystone species?

Back

A species that helps to hold an ecosystem together.

Front

What is primary succession?

Back

The process of ecological change that occurs in an area where no soil exists, such as after a volcanic eruption.

Front

What is the difference between a food chain and a food web?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass, while a food web is a complex network of interconnected food chains.

Front

What is biodiversity?

Back

The variety of life in a particular habitat or ecosystem.

Front

What is the role of producers in an ecosystem?

Back

Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.

Front

What is ecological succession?

Back

The process by which ecosystems change and develop over time.