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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 eat only live organisms to complete the food chain.
B
They directly provide energy for all living organisms.
C
They transform sunlight energy into sugars and starches that other organisms eat.
D
They decompose dead material so it can be used by other organisms.
2) Which of the choices below describes the role of these four things: rabbit, tiger, earthworm, grass
A
consumer, decomposer, producer, consumer
B
decomposer, consumer, consumer, producer
C
producer, consumer, consumer, decomposer
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
Producers have to adapt more than consumers to survive.
C
There is less energy available to the consumers.
D
Consumers have to adapt more than producers to survive.
4) Which of these organisms is a producer? (grass - grasshopper - mouse - snake - bacteria)
A
grasshopper
B
snake
C
bacteria
D
grass
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 not change.
B
Rabbits would no longer exist in this habitat.
C
The number of rabbits would decrease.
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
very slowly, taking generations to show up
B
somewhat slowly, occurring within a creature's life
C
somewhat quickly, taking a few years
D
very quickly, taking about a year
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
growing crops that rabbits do not eat
B
building houses and roads that destroy the rabbits' habitat
C
using toxic chemicals on plants that rabbits eat
D
killing predators that hunt and kill rabbits
8) What part of the plant makes seeds to reproduce?
A
leaf
B
root
C
stem
D
flower
9) To observe a beetle's legs what tool would you use?
A
magnifying glass
B
microscope
C
telescope
D
binoculars
10) When a straw in a water glass looks broken, what is this called?
A
reflection
B
refraction
C
scattered light
D
absorption
*select an answer for all questions
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