Revision: 2.1 Individuals, populations, communities and ecosystems: Part 2

Question 1

What is an ecological niche?

Accepted Answer

A species’ role, resource use, interactions and environmental requirements in an ecosystem

Question 2

Give one biotic factor and one abiotic factor

Accepted Answer

Predators and sunlight

Question 3

How can niche differentiation reduce competition?

Accepted Answer

Species use different resources, places or times, so their needs overlap less

Question 4

What is mutualism?

Accepted Answer

An interaction in which both species benefit

Question 5

What is parasitism?

Accepted Answer

An interaction in which a parasite benefits while its host is harmed

Question 6

What is carrying capacity?

Accepted Answer

The population size an environment can support sustainably with its available resources

Question 7

Give one density dependent factor that limits population growth

Accepted Answer

Competition for food or predation

Question 8

Why does population growth slow as a population approaches carrying capacity?

Accepted Answer

Resources become more limited and density dependent factors become stronger

Alle Karten