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Ecosystems Exam 1
Test Description: Study material
Instructions: Answer all questions to get your test result.
1) What is the typical vegetation of the grasslands?
A
Grass, Bushes, and Small Trees
B
Large Trees, Very Little Grass
C
Large Variety of Plants
D
No plants
2) About half of Earth's biodiversity exists in its tropical rain forests. This means that tropical rain forests have
A
the greatest number of different species of any climate region
B
the greatest number of animals of any climate region
C
more animals than plants
D
more plants than animals
3) The tropical rain forest is a biome with many biotic and abiotic factors. Abiotic factors in this biome include
A
tall trees with broad leaves
B
cold temperatures
C
200-400 cm of rainfall each year
D
less than 50 cm of rainfall each year
4) The tundra is a biome with many biotic and abiotic factors. The abiotic factors in this biome include
A
arctic foxes
B
lemmings
C
permafrost
D
arctic hares
5) Which of the following is abiotic?
A
gar
B
water
C
grass
D
alligator
6) Abiotic is a
A
Living thing
B
Plant
C
Dog
D
Nonliving thing
7) What is deforestation?
A
The destruction of forests for development.
B
The destruction of the cities.
C
The development of fields and valleys for urban sprawl.
D
The removal of companies that want to use the forest.
8) Ecosystems are made of biotic and abiotic factors. Which of the following is a biotic factor?
A
air
B
soil
C
water
D
producers
9) An ecosystem is made of biotic factors. Which of the following is not a biotic factor?
A
Sunlight
B
Trees
C
Rabbits
D
Grass
10) Which of the following is NOT a natural cause of ecosystem disturbances?
A
Earthquakes
B
Wildfires
C
Hurricanes
D
Industrial Pollution
11) Which of the following is a natural cause of ecosystem disturbances?
A
Industrial Pollution
B
Farming
C
Deforestation
D
Volcanic Eruptions
12) Biodiversity
A
causes diseases to destroy populations
B
helps to keep ecosystems stable
C
is only important to biochemists
D
is found only in tropical rainforests
13) Which of the following is NOT one of the five main types of biomes?
A
Tundra
B
Grassland
C
Mountains
D
Desert
14) What is an organism?
A
an artificial intelligence system
B
a naturally occurring mineral
C
an individual animal, plant, or single-celled life form
D
a type of non-living substance
15) Which of the following is not considered a layer in a forest ecosystem?
A
Understory
B
Floor
C
Ground
D
Canopy
16) What does the term understory layer primarily refer to in a forest ecosystem?
A
The topmost layer composed of larger trees
B
The layer composed of decomposing organic matter
C
The layer composed of grass and moss
D
The layer composed of small shrubs and plants under the forest canopy
17) What does the forest floor layer primarily consist of?
A
Freshwater and snow
B
Dead leaves and animal droppings
C
Live trees and birds
D
Rock and sand
18) Which description best fits the canopy layer of a forest?
A
The submerged layer, found in aquatic ecosystems
B
The middle layer, primarily occupied by large mammals.
C
The semi-top layer, home to birds and receives plenty of sunlight
D
The lowest layer, populated by fungi and decomposers.
19) What is the correct order of layers in a forest from top to bottom?
A
Tallest layer, canopy, understory, forest floor
B
Forest floor, understory, canopy, tallest layer
C
Canopy, understory, tallest layer, forest floor
D
Understory, forest floor, canopy, tallest layer
20) What does the term tallest layer in a rainforest ecosystem refer to?
A
The layer with the tallest trees that protrude above the rest of the vegetation
B
The topmost layer where trees are shorter
C
The layer where most animals live
D
The bottommost layer where shrubs and small plants exist
*select an answer for all questions
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