Tutorial
iGCSE Biology: Populations
Learn the key ecological definitions of population, community, and ecosystem. Understand the phases of sigmoid population growth curves and the limiting factors that cause them.
Tutorial
iGCSE Biology: Populations
Learn the key ecological definitions of population, community, and ecosystem. Understand the phases of sigmoid population growth curves and the limiting factors that cause them.
Management & Tools
Deck Contents
27 CardsLesson#1
In ecology, we study how organisms interact with each other and their environment. We start with the basic unit of a single species. A population is defined as all the organisms of one species living in the same area at the same time.
Quiz#2
What is the definition of a population in ecology?
all the organisms of one species living in the same area at the same time
Lesson#3
Of course, very few organisms live in isolation. When you have populations of different species all living and interacting in the same area, you have what's called a community.
Quiz#4
What is the definition of a community in ecology?
populations of different species living together in the same area
Lesson#5
The final level of organisation for your course is the ecosystem. An ecosystem includes the community of living organisms, plus all the non-living, or abiotic, parts of their environment that they interact with, like water, soil, and temperature.
Quiz#6
What is the definition of an ecosystem?
a community of organisms interacting with its non-living environment
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