Download Living Things and the Environment

Living Things and the Environment
Habitats (p. 705-709)
1. A(n) _________________ obtains food, water, shelter,
and other things it needs to live, grow, and reproduce
from its environment.
2. The place where an organism lives and that provides the
things the organism needs is called its
_______________________.
3. What needs of an organism are provided by its
habitat?____________________________________
4. Circle one: True or False? An area contains only one
habitat.
5. List four biotic factors in a prairie dog ecosystem.
a) _________________
c) __________________
b) _________________
d) __________________
6. The process in which plants and algae make food using
water, sunlight, and carbon dioxide is called
_______________________.
7. Define species.
___________________________________________
___________________________________________
__________________
8. All the different populations that live together in an area
make up a(n)
_____________________________________.
9. Put the following levels of organization in an ecosystem in
order from the smallest unit of organization to the
largest.
community ecosystem
organism
population
___________________________________________
10. In addition to a community of different species, what
else does an ecosystem include?
_____________________________________
Studying Populations (p. 711-718)
11. An environmental factor that causes a population to
decrease is called a(n)
___________________________________.
12. The largest population that an area can support is called
its ______________________.
13. What are some ways weather conditions can limit
population growth?
___________________________________________
___________________________________________
Adapting to the Environment/Competition (p. 723-724)
14. A characteristic that allows a species to live successfully
in its environment.
______________________________
15. The way a species makes its living.
________________________
16. The process in which a species becomes better suited to
its environment.
____________________________________
17. The three major types of interactions among organisms
are competition, _______________________, and
symbiosis.
18. Circle True or False: The struggle between organisms to
survive in a habitat with limited resources is called
natural selection.
19. Circle True or False: In a particular environment, two
species can usually occupy the same niche.
Predation (p. 725-727)
20. An interaction in which one organism kills and eats
another is called ____________________. The
organism that does the killing is the
____________________. The organism that is killed is
the ____________________.
21. Circle True or False: If a prey population decreases, the
population of its predator probably will decrease as well.
Symbiosis (p. 728-729)
22. Symbiosis is a close relationship between two
________________ that benefits at least one of the
__________________.
23. Complete the compare/contrast table.
Types of Symbiotic Relationships
Type of Relationship
How Species Are Affected
Mutualism
One species benefits, the
other species is unharmed.
One species benefits, the
other species is harmed.
25.In a parasitic relationship, the organism that benefits is
called a(n) __________________, and the organism it
lives on or in is called a(n) __________________.
Energy Flow in Ecosystems (p. 740-745)
24. Consumers that eat only plants
________________________
25. Consumers that eat both plants and animals
___________________
26. Carnivore that feeds on the bodies of dead organisms
______________________________
27. A series of events where one organism eats another and
obtains energy
___________________________________
28. An organism that makes its own food
________________________
29. Many overlapping food chains
____________________________
30. A diagram that shows the amount of energy that moves
from one feeding level to another in a food web
_______________________
31. Obtains energy by feeding on other organisms
_________________