Interspecific Competition

Which of these is NOT an example of interspecific competition?

• Oysters and barnacles competing for settling space on the rocky shore

• Goats and sheep in the same paddock competing for grass

• Ferns and kawakawa competing for shaded locations in a forest

• Stags competing for mates

Tags

NGSS.MS-LS2-2

Which of these are conditions required for two species to compete? (select all that are correct):

• Live in the same habitat

• Use the same resources

• Active at the same time of day

• Have different niches

Which of these best describes interspecific competition?

• One species benefits while another species is harmed

• One species benefits while another species is killed

• One species is harmed and the other species is harmed too

• One species benefits while nothing happens to the other species

Tags

NGSS.MS-LS2-2

What happens to two competing species that have exactly the same niche?

• Both of them will move into their realised niches to avoid competition

• One of them will move into its realised niche to avoid competing and the other better competitor will take up its fundamental niche

• One of them will go extinct in the local area and the other one will take over the niche

What happens in competitive exclusion?

• Both species go extinct

• One species moves into its realised niche to avoid competition and the better competitor is free to take up the rest of the niche

• One species goes extinct and the other takes over the fundamental niche

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of these best describes contest competition?

• One species wins the competition and the other species loses (it goes extinct in the local habitat).

• One species wins the competition and the other species is forced into a smaller realised niche.

• Both species lose and go extinct

Tags

NGSS.MS-LS2-2

Which of these is NOT a type of niche differentiation to reduce competition?

• Succession

• Zonation

• Stratification

• Allelopathy

Which of these is niche differentiation where the species avoid competing by occupying different spaces? (Select all that count):

• Zonation

• Succession

• Stratification

• Allelopathy

Which of these is a type of niche differentiation where species avoid competing by establishing at different times?

• Zonation

• Succession

• Stratification

• Allelopathy

Which of these describes secondary succession?

• An ecosystem establishing on a completely new rocky island

• An ecosystem establishing on an island that has been cleared by fire