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Course: Alhussan Biology — Stage 9
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Alhussan Biology — Stage 9

Chapter 9: Plants and Photosynthesis

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Chapter 10: Excretion in Humans

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Chapter 11: Human Genetics and Development

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Chapter 12: The Carbon Cycle and Climate Change

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Chapter 13: Variation and Natural Selection

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Quiz

Biology 13.4 Extinction! — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Threats to endangered species (%). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
2.
Which statement is correct?
Local extinction means gone everywhere.
Endangered species are at risk.
Most species ever lived still survive.
Dinosaurs are endangered.
3.
Population of an endangered species. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
4.
Area of mangroves in a country. Calculate the percentage change in "Area (km²)" from 1980 to 2020.
Dr Dabour Hub Academy - figure 3
−70%
59%
41%
−41%
5.
Area of mangroves in a country. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 4
A
B
C
D
6.
Which term matches this definition? “Loss of many species in a short time.”
Habitat
Blood group
Mass extinction
Endangered species
7.
Which term matches this definition? “Coastal trees whose swamps are drained for land.”
Mangrove
Mutation
Local extinction
Gene bank
8.
Threats to endangered species (%). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
9.
Which term matches this definition? “When no individuals of a species are alive.”
Evolution
Extinction
Meteorite
Continuous variation
10.
Extinctions rose from 60 in the 1800s to 150 in the 1900s. How many times more?
2.5 times
90.0 times
0.4 times
210.0 times
11.
Which statement is NOT correct?
Current extinction rate is below natural.
Himalayan balsam is an invasive plant.
Dinosaurs are globally extinct.
Water hyacinth is an invasive plant.
12.
The bar chart shows the number of known extinctions in each century. What can you conclude?
Dr Dabour Hub Academy - figure 6
There were most in the 1600s
Extinctions are decreasing
The rate is constant
The extinction rate has increased sharply in recent centuries
13.
Area of mangroves in a country. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
14.
Which term matches this definition? “Loss of a population from one place.”
Local extinction
Overproduction
Background rate
Nature reserve
15.
80% of 2000 species were lost. How many species?
1600
25
160,000
400
16.
Threats to endangered species (%). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
17.
A population fell from 4000 to 1200. Calculate the percentage decrease.
233%
70%
30%
2800%
18.
Threats to endangered species (%). What is the value for Invasive species?
Dr Dabour Hub Academy - figure 9
11
15
8
32
19.
Which statement is NOT correct?
Hunting and poaching can endanger species.
Himalayan balsam is an invasive plant.
Global extinction can be reversed.
Once globally extinct a species has gone forever.
20.
Species lost in the five mass extinctions (%). Which has the smallest value?
Dr Dabour Hub Academy - figure 10
2
1
4
3
21.
Which statement is NOT correct?
Once globally extinct a species has gone forever.
Most species ever lived still survive.
Endangered species are at risk.
Pollution can destroy habitats.
22.
Which term matches this definition? “Rock from space that hits Earth.”
Selection pressure
Meteorite
Natural selection
Variation
23.
Population of an endangered species. Between which two values of "Year" did "Number" change the most?
Dr Dabour Hub Academy - figure 11
2010 and 2015
2000 and 2005
1990 and 2000
2005 and 2010
24.
75% of 1000 species were lost. How many species?
13
750
75,000
250
25.
A population fell from 5000 to 1500. Calculate the percentage decrease.
3500%
30%
70%
233%
26.
Which statement is correct?
Draining bogs creates habitats.
Current extinction rate is below natural.
Extinction is unnatural.
Some extinct species have descendants alive today.
27.
Threats to endangered species (%). Which has the greatest value?
Dr Dabour Hub Academy - figure 12
Hunting
Invasive species
Pollution
Habitat loss
28.
96% of 5000 species were lost. How many species?
480,000
200
4800
52
29.
Which catastrophic event may have caused the extinction of the dinosaurs?
Pollution from cars
A cold winter
A giant meteorite strike
A small flood
30.
Species lost in the five mass extinctions (%). About how many times bigger is 3 than 2?
Dr Dabour Hub Academy - figure 13
0.6
1.3
1.9
2.6
31.
Population of an endangered species. At what value of "Year" is "Number" greatest?
Dr Dabour Hub Academy - figure 14
2010
2005
1990
2000
32.
Population of an endangered species. Calculate the percentage change in "Number" from 1990 to 2020.
Dr Dabour Hub Academy - figure 15
−80%
−391%
80%
20%
33.
Which is a main cause of today's high extinction rate?
Lack of mutation
Too many species
Too much rain
Human activity such as habitat destruction
34.
There have been ____ major mass extinctions.
fifty
two
zero
five
35.
Climate change can cause ____.
extinction
immortality
stability
cloning
36.
Draining land for farming destroys ____.
glaciers
mountains
mangroves
deserts
37.
Removing habitats leaves animals without ____.
shelter and food
weather
sound
light
38.
Pollution can destroy ____.
stars
habitats
meteorites
rocks only
39.
Hunting and poaching can ____ species.
protect
endanger
feed
clone
40.
Today's extinction rate is many times ____ the natural rate.
higher
less than
lower
equal to
41.
Endangered species are at ____.
risk
home
no risk
rest
42.
Tropical organisms died in an ice age from cold or lack of ____.
air
salt
light only
food
43.
True or false? Humans have no effect on extinction.
True
False
44.
True or false? Draining bogs creates habitats.
True
False
45.
True or false? Marshes and bogs are lost to agriculture.
True
False
46.
True or false? The current rate is mainly due to human activity.
True
False
47.
True or false? Dinosaurs are endangered.
True
False
48.
True or false? A giant meteorite strike can cause mass extinction.
True
False
49.
True or false? Local extinction means gone everywhere.
True
False
50.
True or false? Global extinction can be reversed.
True
False
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Part of Chapter 13: Variation and Natural Selection — see every lesson and quiz in this unit.
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