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Course: Alhussan Biology — Stage 8
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Alhussan Biology — Stage 8

Chapter 5: Respiration and the Respiratory System

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Chapter 6: Nutrition, Health and Movement

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Chapter 7: The Health of the Environment

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Chapter 8: Weather and Climate

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Quiz

7.8 Chapter 7 Review: The Health of the Environment — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Invasive plant cover in a nature reserve. Calculate the percentage change in "Cover (%)" from 2014 to 2022.
Dr Dabour Hub Academy - figure 1
77%
343%
−343%
443%
2.
True or false? A biome is a large ecosystem with a characteristic climate.
True
False
3.
Which statement is correct?
A population is all species in a habitat.
Biodiversity is highest at the poles.
A change to one population affects others.
Pollination is not linked to seeds.
4.
True or false? A change to one population affects others.
True
False
5.
The rabbit population rose from 70 to 150 in one year. Calculate the percentage increase.
53%
214%
114%
80%
6.
Pesticides raise crop ____.
yield
weeds
pests
loss
7.
True or false? Energy is lost as heat at each step.
True
False
8.
Invasive plant cover in a nature reserve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
9.
Which statement is NOT correct?
A population graph rises fastest where the line is steepest.
Populations fall due to disease, food shortage or more predators.
Invasive species often have no predators of their own.
Invasive species increase biodiversity.
10.
Species recorded in protected and unprotected forests. What is the total of all the values?
Dr Dabour Hub Academy - figure 3
66
187
207
167
11.
A rabbit population over seven years. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 4
A
B
C
D
12.
Species recorded in protected and unprotected forests. What is the value for Logged D?
Dr Dabour Hub Academy - figure 5
31
64
26
66
13.
On a population graph, the population rises fastest where the line is ____.
lowest
horizontal
steepest
flattest
14.
Biodiversity is highest in the warm, wet ____.
mountains
tropics
deserts
poles
15.
Shell thickness fell from 0.5 mm to 0.35 mm. By what percentage?
30%
70%
15%
43%
16.
Which is the correct definition of “Biological control”?
A pesticide that kills insects.
Transfer of pollen between flowers.
Where organisms are found in an area.
Using a natural enemy to control a pest.
17.
Invasive plant cover in a nature reserve. What is the value of "Cover (%)" when "Year" is 2020?
Dr Dabour Hub Academy - figure 6
35
57
19
7
18.
Species recorded in protected and unprotected forests. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
19.
Species recorded in protected and unprotected forests. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
20.
Rabbits rose from 80 to 160 in a year. Calculate the percentage increase.
200%
50%
80%
100%
21.
About ____% of energy passes on.
90
50
1
10
22.
Populations fall due to disease, food shortage or more ____.
rain
sleep
predators
light
23.
10 quadrats had a mean of 3 plants. Estimate the total in 300 m² (1 m² quadrats).
900 plants
30 plants
90 plants
3000 plants
24.
Invasive plant cover in a nature reserve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 9
A
B
C
D
25.
True or false? Seed banks destroy seeds.
True
False
26.
DDT in eggs of a bird of prey and eggshell thickness. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
27.
True or false? A population is all species in a habitat.
True
False
28.
Arrows point from food to ____.
producer
eater
sun
soil
29.
Invasive plant cover in a nature reserve. At what value of "Year" is "Cover (%)" greatest?
Dr Dabour Hub Academy - figure 11
2018
2022
2014
2020
30.
True or false? DDT persists and causes bioaccumulation.
True
False
31.
Which term matches this definition? “The place where an organism lives.”
Habitat
Invasive species
Nocturnal
Conservation
32.
A rabbit population over seven years. What is the value of "Rabbits" when "Year" is 1?
Dr Dabour Hub Academy - figure 12
24
153
222
32
33.
A rabbit population over seven years. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 13
A
B
C
D
34.
DDT in eggs of a bird of prey and eggshell thickness. By how much does "Shell thickness (mm)" change between 0 and 25?
Dr Dabour Hub Academy - figure 14
1.15
0.15
0.23
0.61
35.
True or false? Pesticides raise crop yield.
True
False
36.
DDT in eggs of a bird of prey and eggshell thickness. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 15
A
B
C
D
37.
A biome is a large ecosystem with a characteristic ____.
city
river
animal
climate
38.
Rabbits rose from 50 to 150 in a year. Calculate the percentage increase.
200%
100%
300%
67%
39.
DDT in eggs of a bird of prey and eggshell thickness. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 16
"Shell thickness (mm)" decreases as "DDT in eggs (ppm)" increases
"Shell thickness (mm)" stays the same
"Shell thickness (mm)" increases as "DDT in eggs (ppm)" increases
"Shell thickness (mm)" rises to a peak at 0, then falls
40.
Which term matches this definition? “Build-up of a persistent toxin up a food chain.”
Mineral ions
Bioaccumulation
Abiotic factor
Resource
41.
A rabbit population over seven years. Between which two values of "Year" did "Rabbits" change the most?
Dr Dabour Hub Academy - figure 17
1 and 2
3 and 4
5 and 6
2 and 3
42.
Invasive plant cover in a nature reserve. Between which two values of "Year" did "Cover (%)" change the most?
Dr Dabour Hub Academy - figure 18
2020 and 2022
2018 and 2020
2016 and 2018
2014 and 2016
43.
Which term matches this definition? “All the populations in a habitat.”
Sweep net
Community
Pesticide
Bioaccumulation
44.
Invasive plant cover in a nature reserve. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 19
"Cover (%)" rises to a peak at 2020, then falls
"Cover (%)" increases as "Year" increases
"Cover (%)" stays the same
"Cover (%)" decreases as "Year" increases
45.
A rabbit population over seven years. Calculate the percentage change in "Rabbits" from 0 to 6.
Dr Dabour Hub Academy - figure 20
90%
−858%
958%
858%
46.
True or false? Pesticides can lower biodiversity.
True
False
47.
Where is biodiversity highest?
In cold deserts
At the poles
In hot deserts
In the warm, wet tropics
48.
Which statement is correct?
Biodiversity is highest at the poles.
Food chains start with top predators.
Invasive species increase biodiversity.
A community is all the populations together.
49.
True or false? A population graph rises fastest where the line is steepest.
True
False
50.
True or false? Energy increases up food chains.
True
False
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Part of Chapter 7: The Health of the Environment — see every lesson and quiz in this unit.
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