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Chapter 1: Populations and Communities Section 1: Living Things and the Enviornment

Terms in this set (25)

What needs are met by an organism's environment?
an organism obtains food ,water, shelter and other things it needs to live, grow and reproduce from its environment.
What are the two parts of an organism's habitat with which it interacts
The living and nonliving parts of its habitat
What are the levels of organization within an ecosystem
Organisms population community ecosystem
organism
A living thing
habitat
An environment that provides the things a specific organism needs to live, grow, and reproduce.
biotic factor
The living parts of a habitat
abiotic factors
A nonliving part of an organism's habitat
photosynthesis
Plants use the sun's energy to convert water and carbon dioxide into sugars
species
A group of organisms that are closely related and can mate to produce fertile offspring
population
All the members of one species in a particular area
community
All the different populations that live together in an area
ecosystem
The community of organisms that live in a particular area along with their nonliving surroundings, make up an ecosystem
ecology
The study of living things and how they interact with eachother
why do different organisms live in different habitats
Organisms have different requirements for survival.
Name a biotic factor in your environment
Deers, evergreen trees
How do abiotic factors differ from biotic factors
Abiotic= non living
biotic= living
what is ecology
The study of how organisms interact with each other and their environment.
What basic needs are provided by an organism's habitat
food, water, shelter, and anything else the organism needs to live, grow, and reproduce
What might happen to an organism if its habitat could not meet one of its needs
The organism might die.
Define the terms biotic factors and abiotic factors
biotic factors are living things in habitats
abiotic factors are the nonliving things in habitats
List all the abiotic factors and biotic factors in figure 4
b: prarie dog, bird, snake, owl, grass, bison, trees
a: soil
Explain why water and sunlight are two abiotic factors that are important to most organisms?
Plants need water and sunlight to grow. Animals need water to survive
List these terms in order from the smallest level to the largest: population, organism, ecosystem, community
organism, population, community, ecosystem
Would all the living things in a forest to be considered a population or a community?
Community. A community is all the living things that interact with a community. A population is one species
How might the changes in one population affect other populations in a community
Overpopulating if the population that changes is a predator,
If population that changes is prey, the predators will lose out on the nutrients in that animal.
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