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Biotic And Abiotic Factors Of Earth's Ecosystems
Test Description: Study
Instructions: Answer all questions to get your test result.
1) A plant begins to bend when a tall building is built near it. Why does this occur?
A
It is adjusting to changes in temperature.
B
It is growing toward the light source.
C
It is adjusting to changes in the soil.
D
It is growing away from the light source.
2) What happens as a plant is turned away from its light source?
A
The plant grows away from the light source.
B
The plant is not affected because the light bends towards the plant.
C
The plant bends towards the light source.
D
The plant stops growing because it has no way to access light.
3) Why do seeds go through a period of dormancy?
A
It allows time for the right conditions to occur before the seed germinates.
B
It allows time for pollination to occur before the seed germinates.
C
It allows time for dry soil to accumulate before the seed germinates.
D
It allows time for sunlight to appear before the seed germinates.
4) Which is true of energy in ecosystems?
A
It never changes form
B
It is both created and destroyed.
C
It follows a cycle pattern.
D
It flows in one direction.
5) Which organism would most likely appear at the top of an energy pyramid?
A
grass
B
mouse
C
hawk
D
snake
6) Which best represents what happens in a food chain?
A
Energy from the Sun is taken in by grass to make food, the grass is then eaten by a rabbit, which later gets ate by a fox
B
Energy from the Sun is absorbed by a rabbit which is then eaten by a fox before it dies and is decomposed by grass
C
A fox eats grass which has gathered energy by decomposing a rabbit which got its energy from the Sun to make food
D
Grass is eaten by a rabbit which is then eaten by a fox which is the Sun then consumes to ensure its survival
7) Which is true of the amount of matter in ecosystems
A
It remains constant
B
Scientists can not determine how it changes
C
It decreases over time
D
It increases over time
8) Which is a biotic factor in an ecosystem?
A
The type of minerals present in soil
B
A plant living near a stream
C
The amount of rainfall
D
The angle of the Sun
9) What is the source of most energy on Earth?
A
water
B
soil
C
The Sun
D
air
10) Which includes both an abiotic and a biotic factor?
A
A squirrel eating an acorn
B
A rock rolling down a hill
C
A chicken laying an egg
D
A deer drinking from a stream
*select an answer for all questions
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