Biology 6.1 Habitats, Niches & Symbiosis

Front

What is the range of tolerance in an organism's environment?

Back

The range of tolerance refers to the limits of environmental conditions (such as temperature, humidity, and food availability) within which an organism can survive and reproduce.

Front

What happens if an organism's environment is outside its range of tolerance?

Back

The organism is likely to fail to reproduce.

Front

Define 'habitat'.

Back

A habitat is an area with a particular combination of physical and biological environmental factors that affect which organisms can live within it.

Front

What is a 'niche'?

Back

A niche is the role or function of an organism or species within an ecosystem, including its habitat, resource use, and interactions with other organisms.

Front

What is symbiosis?

Back

Symbiosis is a close, interdependent relationship between two species.

Front

What are the three main types of symbiotic relationships?

Back

The three main types of symbiotic relationships are mutualism, commensalism, and parasitism.

Front

What is mutualism?

Back

Mutualism is a type of symbiotic relationship where both species benefit, such as bees pollinating flowers while obtaining nectar.

Front

What is commensalism?

Back

Commensalism is a type of symbiotic relationship where one species benefits and the other is neither helped nor harmed.

Front

What is parasitism?

Back

Parasitism is a type of symbiotic relationship where one species benefits at the expense of the other.

Front

What is competitive exclusion?

Back

Competitive exclusion is a principle stating that two species competing for the same resources cannot coexist if other ecological factors are constant.