Name: ______________________________
Life 1 Test - PAP
1. (8.2D) Crickets chirp to attract other crickets. The temperatures and rates of their
chirping are graphed above. Which statement below is most likely true for the data
represented in the graph?
a. the cooler the temperature, the louder the crickets chirp
b. the crickets cannot chirp at temperatures lower than 10 degrees C.
c. the warmer the temperature, the more often crickets chirp.
d. the temperature and the chirping of crickets are not related.
2. (8.11A) Which example best represents an interconnection between an aquatic food
web and a terrestrial food web?
a. Fish eat insects that land on the surface of a pond.
b. Snakes eat bird eggs.
c. Bats eat mosquitoes.
d. Mountain lions catch and eat deer.
3. (8.11 B) Plants often compete for abiotic resources. Which of the following are NOT
competed for by plants?
a. light
b. water
c. bacteria
d. warmth
4. (8.2D) Scientists have spent many years studying the peppered moth, which is a
species that has adapted its color from light to dark in reaction to environmental
pollution. Which of the following line graphs represents the data from the table?
a.
b.
c.
d.
5. (8.11 A) Which of the following is correct about the relationship between predators
and their prey population?
a. if the prey population decreases, the predator population increases
b. If there is an increase in predator population, the prey may not be able to
reproduce quickly enough to support the predator population
c. If the prey population increases, the predator population will decrease
d. Abiotic factors have no affect on predator/prey relationships
6. (8.11 B) The picture above shows a snake and a scorpion in a desert environment.
The snake and scorpion would most likely compete fora. air
b. light
c. space
d. water
7. (8.11B) Which of these species would be most in danger of becoming extinct if one of
their food sources became unavailable?
a. Brown Bear
b. Panda
c. Polar Bear
d. Black Bear
8. (8.11 B) A food web for an aquatic ecosystem is shown above. In this ecosystem,
which organisms are in direct competition for minnows?
a. Bass and algae
b. Frogs and insects
c. Frogs and turtles
d. Herons and insects
9. (8.2B) Which of these experimental designs would best test this hypothesis?
a.
b.
c.
d.
10. (8.2C) The line graph shows the heights of plants grown in fertilized and unfertilized
soil. Based on this information, what will MOST likely occur on day six?
a.
b.
c.
d.
Neither plant should increase by 1 cm in height
Plant A should increase about 1 cm in height
Plant B should increase about 1 cm in height
Plant A should increase about 2 cm in height
11. (8.11 B) According to the food web to the
right, which animals compete for food?
a. owl-squirrel
b. mouse-frog
c. mouse-squirrel
d. fox-squirrel
12. (8.11A) All energy transformations in an ecosystem begin with –
a.
b.
c.
d.
a scavenger
the sun
a decomposer
a herbivore
Use the food web below to answer questions #13-14.
13. (8.11A) Look at the food web shown above. If all the snakes were killed, what is the
first organism that will be affected in the balance of organisms in this ecosystem?
a. Increased populations of mice and frogs
b. An increased population of crickets
c. Decreased populations of plants and seeds
d. A decreased population of rabbits
14. (8.11 A) Look at the food web shown above. If all the crickets are removed from this
ecosystem, the population that will most likely decrease first is —
a. Plants
b. Frogs
c. Mice
d. Snakes
Use the food web below to answer questions #15 - 17.
15. (8.11A) All of these terms describe the hawk except –
a.
b.
c.
d.
producer
carnivore
predator
consumer
16. (8.11B) Which 2 organisms are in competition for the same food source?
a.
b.
c.
d.
coyote & rabbit
hawk & rabbit
hawk & mouse
coyote & hawk
17. (8.11A) In the food web above, which of the following pairs is not a predator/prey
relationship?
a.
b.
c.
d.
Black-tailed Rabbit, Coyote
Deer Mouse, Red-Tailed Hawk
Deer Mouse, Coyote
Black-tailed Rabbit, Deer Mouse
18. (8.11A) In the food web above, which of the following organisms is both a primary
and secondary consumer?
a.
b.
c.
d.
19. (8.11A) Which type of organism is not depicted in the food web above?
a.
b.
c.
d.
Decomposer
Producer
Herbivore
Omnivore
20. (8.5D) The elements that make up the compound glucose are a.
b.
c.
d.
carbon dioxide and hydrogen
carbon dioxide and water
carbon, hydrogen and oxygen
carbon, hydrogen, and sunlight energy
21. (8.11C) In the food web above, which organism’s food supply would be least
affected by a spray that kills large numbers of aphids?
a.
b.
c.
d.
Tomatoes
Lacewings
Lady beetles
Spiders
22. When a goat eats grass, what form of energy passes directly from the grass to the
goat?
a.
b.
c.
d.
Heat
Electrical
Light
Chemical
23. (8.11A) The fungi shown in the picture are decomposers. Decomposers are an
important part of an ecosystem because they a.
b.
c.
d.
produce oxygen
provide food for carnivores
break down dead organisms
convert sunlight into food energy
24. (8.11B) One bird species that feeds on large seeds nests in the same tree as a bird
that feeds on small seeds. How are the birds able to coexist?
a.
b.
c.
d.
they occupy different ecosystems
they occupy different niches
they occupy different communities
they occupy different habitats
Use the following food web to answer questions #24 – 26.
25. (8.11C) In the food web above, what would most likely happen to the future
population of hawks if the insects decreased?
a.
b.
c.
d.
increase
decrease
stay the same
cannot be determined
26. (8.11C) In the food web above, what population of organism would be affected the
greatest if the decomposers were eliminated?
a.
b.
c.
d.
producers
primary consumers
secondary consumers
tertiary consumers
27. (8.11A) Which abiotic factor could change without disrupting this ecosystem?
a.
b.
c.
d.
temperature
amount of sunlight
amount of soil
all would disrupt the ecosystem
28. (8.11A) If elements are to be recycled in nature, which organisms must be present?
a.
b.
c.
d.
predators
herbivores
parasites
decomposers
29. (8.11C) Which statement describes why pesticides are said to “move up the food
chain”?
a. pesticides have a greater effect on larger animals than on insects
b. top predators often accumulate the pesticides contained in the bodies of their
prey
c. birds and predatory mammals are not affected by pesticides
d. pesticides kill insects and other target pests before they can absorb the
poison
30. (8.2E) Harvested almost to extinction, a sea mammal received “endangered
species” protection several years ago. Which graph most accurately represents its
history and the desired outcome from protection?