Chapter 21 - Ecology

Front

What happens to a population when the death rate is larger than the birth rate?

Back

The population will shrink.

Front

What type of isolation is represented by islands in the Pacific Ocean that have been colonised by a species of finch from the mainland?

Back

Geographical isolation.

Front

What are the living portions of the ecosystem called?

Back

Biotic factors.

Front

What does a food web represent?

Back

All connections of energy flow throughout all organisms in a habitat.

Front

Which of the following is not a greenhouse gas: Carbon dioxide, Methane, Water vapour, Nitrogen?

Back

Nitrogen.

Front

Define ecology.

Back

Ecology is the study of interactions between organisms and their environment.

Front

What is a biome?

Back

A biome is a large geographical biotic unit, a major community of plants and animals with similar life forms and environmental conditions.

Front

What is the difference between biotic and abiotic factors?

Back

Biotic factors are living components of an ecosystem, while abiotic factors are non-living physical and chemical elements.

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms interacting with their physical environment.

Front

What is the role of producers in an ecosystem?

Back

Producers, such as plants, convert solar energy into chemical energy through photosynthesis.