CHAPTER 3 INTERACTIONS OF LIVING THINGSChapter 3 Assessment
Vocabulary
Select the correct term to complete the sentences.Section 3.1- ____ can enter an ecosystem because of natural causes or
human activities. - An organism must live in a certain ____ that suits its
particular needs. - An ____ includes the living and non-living things
functioning together.
Section 3.2 - There are three types of ____: parasitism, mutualism, and
commensalism. - A _____ always starts with a producer storing energy from
the sun. - A group of organisms of the same species living together in a
certain place is a ____. - Predator-prey relationships, competition, and symbiosis are
the three types of interactions among organisms in a ____. - How populations increase or decrease in numbers over time
is called the ____. - Organisms in the same community may be in ____ for food,
water, or living space.
Concepts
Section 3.1- Name a habitat where you predict that there are species
that have yet to be classified by scientists. Give an
explanation for your prediction. - Which is not a variable that affects organisms that live on
land?
a. sunlight
b. oxygen
c. temperature
d. pH - List and describe the three variables of freshwater habitats
that are different than variables that affect land habitats. - Why is most life in the ocean concentrated near the surface?
Discuss sunlight, temperature, and pressure in your
answer.
Section 3.2 - Put these terms in order from smallest to largest level of
organization: organ system, biosphere, tissue, organism,
ecosystem, population, community, organ, cell. - Which of the following limit population growth?
a. space
b. nutrients
c. food
d. all of the above - The amount of energy __ as you move further up a
food chain.
a. increases
b. decreases
c. remains the same
ecosystem
food chain
pollutantspopulation
growth rate
communitycompetition
symbiosis
habitat