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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
more animals than plants
B
the greatest number of different species of any climate region
C
the greatest number of animals of any climate region
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
200-400 cm of rainfall each year
B
cold temperatures
C
tall trees with broad leaves
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 hares
B
permafrost
C
arctic foxes
D
lemmings
5) Which of the following is abiotic?
A
alligator
B
gar
C
grass
D
water
6) Abiotic is a
A
Nonliving thing
B
Living thing
C
Plant
D
Dog
7) What is deforestation?
A
The removal of companies that want to use the forest.
B
The destruction of forests for development.
C
The development of fields and valleys for urban sprawl.
D
The destruction of the cities.
8) Ecosystems are made of biotic and abiotic factors. Which of the following is a biotic factor?
A
soil
B
water
C
producers
D
air
9) An ecosystem is made of biotic factors. Which of the following is not a biotic factor?
A
Grass
B
Sunlight
C
Trees
D
Rabbits
10) Which of the following is NOT a natural cause of ecosystem disturbances?
A
Hurricanes
B
Wildfires
C
Earthquakes
D
Industrial Pollution
11) Which of the following is a natural cause of ecosystem disturbances?
A
Volcanic Eruptions
B
Farming
C
Industrial Pollution
D
Deforestation
12) Biodiversity
A
is found only in tropical rainforests
B
is only important to biochemists
C
causes diseases to destroy populations
D
helps to keep ecosystems stable
13) Which of the following is NOT one of the five main types of biomes?
A
Desert
B
Grassland
C
Mountains
D
Tundra
14) What is an organism?
A
a naturally occurring mineral
B
an individual animal, plant, or single-celled life form
C
a type of non-living substance
D
an artificial intelligence system
15) Which of the following is not considered a layer in a forest ecosystem?
A
Canopy
B
Ground
C
Understory
D
Floor
16) What does the term understory layer primarily refer to in a forest ecosystem?
A
The layer composed of small shrubs and plants under the forest canopy
B
The layer composed of decomposing organic matter
C
The layer composed of grass and moss
D
The topmost layer composed of larger trees
17) What does the forest floor layer primarily consist of?
A
Live trees and birds
B
Rock and sand
C
Dead leaves and animal droppings
D
Freshwater and snow
18) Which description best fits the canopy layer of a forest?
A
The middle layer, primarily occupied by large mammals.
B
The submerged layer, found in aquatic ecosystems
C
The lowest layer, populated by fungi and decomposers.
D
The semi-top layer, home to birds and receives plenty of sunlight
19) What is the correct order of layers in a forest from top to bottom?
A
Understory, forest floor, canopy, tallest layer
B
Tallest layer, canopy, understory, forest floor
C
Canopy, understory, tallest layer, forest floor
D
Forest floor, understory, canopy, tallest layer
20) What does the term tallest layer in a rainforest ecosystem refer to?
A
The layer where most animals live
B
The bottommost layer where shrubs and small plants exist
C
The layer with the tallest trees that protrude above the rest of the vegetation
D
The topmost layer where trees are shorter
*select an answer for all questions
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