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Test Description: Life Science
Instructions: Answer all questions to get your test result.
1) Why are decomposers important in an ecosystem?
A
They decompose dead material so it can be used by other organisms.
B
They eat only live organisms to complete the food chain.
C
They transform sunlight energy into sugars and starches that other organisms eat.
D
They directly provide energy for all living organisms.
2) Which of the choices below describes the role of these four things: rabbit, tiger, earthworm, grass
A
producer, consumer, consumer, decomposer
B
decomposer, consumer, consumer, producer
C
consumer, decomposer, producer, consumer
D
consumer, consumer, decomposer, producer
3) Why are there usually more producers in an ecosystem than consumers?
A
There is more energy available to the consumers.
B
There is less energy available to the consumers.
C
Producers have to adapt more than consumers to survive.
D
Consumers have to adapt more than producers to survive.
4) Which of these organisms is a producer? (grass - grasshopper - mouse - snake - bacteria)
A
grass
B
snake
C
grasshopper
D
bacteria
5) In a certain habitat, a coyote's main source of food is the cottontail rabbit. What would happen if the number of coyotes in this habitat were increased?
A
The number of rabbits would decrease.
B
Rabbits would no longer exist in this habitat.
C
The number of rabbits would not change.
D
The number of rabbits would increase.
6) When living things adapt, they change so that they can better survive in their environment. How often do physical adaptations happen?
A
somewhat quickly, taking a few years
B
somewhat slowly, occurring within a creature's life
C
very quickly, taking about a year
D
very slowly, taking generations to show up
7) Human activities often reduce the number of animal species in an area. Which human activity might increase the number of rabbits in an area?
A
using toxic chemicals on plants that rabbits eat
B
building houses and roads that destroy the rabbits' habitat
C
killing predators that hunt and kill rabbits
D
growing crops that rabbits do not eat
8) What part of the plant makes seeds to reproduce?
A
leaf
B
flower
C
root
D
stem
9) To observe a beetle's legs what tool would you use?
A
telescope
B
microscope
C
magnifying glass
D
binoculars
10) When a straw in a water glass looks broken, what is this called?
A
scattered light
B
reflection
C
refraction
D
absorption
*select an answer for all questions
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