Ecological Niches and Light Requirements

What is the original meaning of niche and what does it mean in ecology?

• a type of bird species as it originally means nest

• the living area as it means nest.

• the role or function of an organism within its ecosystem. as it means nest

• the physical space an organism occupies as it means role.

In this example, niche is an area that is determined by ____ dimensions

• 1

• 2

• 3

• 4

How much light and moisture does the orange lichen like?

• a lot of light, but little moisture

• a lot of light and moisture

• little light and little moisture

• little light and a lot of mositure

In this example, the fundamental niche is

• The specific habitat where a species is found.
• All the potential place where an organism can live (potential niche)

• The limited place where on organism can live

Which one is smaller: the realized niche or the fundamental niche?

• The realized niche is larger due to increased resource availability.
• The realized niche is the same as the fundamental niche

• The realized niche is smaller due to biotic interactions that restrict species' distribution.

What is competitive exclusion?

• Competitive exclusion allows multiple species to thrive together.
• Competitive exclusion is a strategy for resource sharing among species.
• Competitive exclusion is the principle that two species competing for the same resources cannot coexist.

What happened to the coyote population after the wolves were reintroduced to Yellowstone?

• The coyote population increased.
• The coyote population remained the same.
• The coyote population decreased.
• The coyote population migrated out of Yellowstone.