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Terms in this set (55)
How does natural selection result in adaptions in a species?
Organisms better suited to survive will pass traits to offspring.
What is an organisms niche?
It's role in the habitat.
How do adaptions help an organism to reduce competition for food and other resources?
Enable them to find food, shelter, other resources and reduce competition with other species.
When the hare population increased, what happened to the Lynx population. Why?
The Lynx increase because they have more food.
How do you think an increase in the Lynx population affected the hare population? Why?
Hares decrease because more Lynx eating them
What other factors could have caused a decrease in the hare population?
Lack food, disease, other predators
Which of the following lives in a prairie ecosystem?
C) oak tree
Which of the following is a biotic factor?
Which of the following lists the levels of an ecosystem in order from largest to smallest?
ecosystem, community, population, organism
An organism gets food, water,shelter, and other things it needs to live, grow, and reproduce from its
C abiotic factors
the nonliving things that interact with an organism are called biotic factors
The study of how living things interact with each other and there environment is called ecology.
a group of organisms that can mate with each other and produce offspring that can also mate and reproduce is species.
Oxygen is an abiotic factor in the environment ------- that is important for plants to make their own food.
all the organisms that live in a particular area and their nonliving surroundings make up an ecostystem.
all the members of one community living in a particular area make up ---------- a population.
a vegetable garden is 12 meters long by 7 meters wide. It is home to 168 mice. What is the population density of the mice?
2 = 168/ 12x7
name three limiting factors
the largest ____ an area can support is called the carrying capacity.
the number of individuals that die in a population in a certain time period is the _____
all the living and nonliving things that interact in a particular area make up a_______
the parts of an organisms environment that are living or once living, interact with the organism are ______
All the diff populations that live together in an area make up an ______
what an organism gets from its environment?
food water shelter and other things it needs to live grow and reproduce
An environment that provides the things a specific organism needs to live, grow, and reproduce.
Why organisms live in different habitats?
bc they have diff requirements for survival and reproduction.
living or once living
EX of Abiotic
sunlight soil temperature water and oxygen
is a group of organisms that can mate with each other and produce offspring that can also mate and reproduce.
all the members of one species living in a particular area
all the diff populations that live together in an area
the community of organisms that live in a particular area, along with there nonliving environment.
the study of how organisms interact with each other and with there environment.
the number of births per 1000 individuals for a given time period.
the number of deaths per 1000 individuals for a given period.
the number of individuals in a area of a specific size
environmental factor that causes a population to stop growing or decreasing in size
EX of limiting factors
the largest population that an area can support.
a characteristic that makes an individual better suited to a specific environment may eventually become common in that specie
the behaviors and physical characteristics that allow organisms to live successfully in their environments.
the struggle between organisms to survive as they attempt to use the limited resources.
an interaction in which one organisms kills another for food or nutrients.
organism that does the killing
the one that is killed
is any relationship in which two species live closely together and at least one of the species benefits.
both species are benefited
where one species benefits and the other is nether harmed or helped.
involves one organism living with, on or inside another organism and harming it
the organism that benefits
organism that lives on or in it
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