Transcript Science TAKS objective 3

Science TAKS
2009-2010
Objective 3
• What is it?
• What do I study?
• How many questions?
Objective 3
• Interdependence of organisms and their
environment
• In other words, ecology which is the study
of living things and their interaction with
the environment.
• There are eight questions on the test.
Objective 3
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How does using killed or weakened bacteria in
an immunization help the body prevent
infections?
F Antibodies are formed that fight those
types of bacteria.
G The body develops a fever that kills
beneficial bacteria.
H Bacterial reproductive cycles are
disrupted.
J Bacteria-fighting viruses are activated
Objective 3
According to this phylogenetic tree, which
organism is most closely related to
Organism V?
AQ
BU
CW
DX
Objective 3
At one time large herds of bison roamed
across the Great Plains. Brown-headed
cowbirds often followed
the bison, capturing and eating insects that
scattered as the bison walked through the
grasses. This
relationship between the bison and the
cowbird was —
F predatory
G competitive
H commensal
J parasitic
Objective 3
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Some plants have a hard waxy coating on
their leaves that helps prevent water loss. In
which environment do these plants most likely
grow?
A Desert
B Marine
C Grassland
D Rain forest
Objective 3
A food web is shown above. If the rabbit
population increases, which of the
following is
most likely to happen soon afterward?
A The deer population will increase.
B The plant population will decrease.
C Different birds will move into the area.
D The insect population will be eliminated