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Question-1
The term endangered species is defined as:
(A)
a species in decline due to human activities
(B)
a species not in immediate danger of extinction, but potentially becoming so
(C)
a species in immediate danger of extinction
(D)
a species with a low number of individuals
Question-2
What is the effect of pesticides on birds?
(A)
It accumulates in the tissues and caused infertility in the females.
(B)
It causes cancer in the adult birds and a high percentage of them die from it.
(C)
It causes the females to lay eggs with very thin shells that break during the incubation period killing the chicks.
(D)
The chicks are missing a “tooth” that enabled them to break the shell. They die because they cannot get out of the shell.
Question-3
The process whereby an increasing proportion of the population lives in cities is known as :
(A)
ruralism
(B)
secularization
(C)
evolution
(D)
urbanization
Question-4
Which statement below best describes the ways that energy and pesticides are transferred between levels in food chains?
(A)
Available energy increases and pesticide concentrations increase as you move up a food chain
(B)
Available energy increases and pesticide concentrations decrease as you move up a food chain
(C)
Available energy decreases and pesticide concentrations increase as you move up a food chain
(D)
Available energy decreases and pesticide concentrations decrease as you move up a food chain
Question-5
Which of the following is a prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?
(A)
Damage to digestive system
(B)
Increased liver cancer
(C)
Neurological disorder
(D)
Increased skin cancer
Question-6
The underground water is mainly polluted due to:
(A)
entering of polluted water to the water table
(B)
the construction of polluted water
(C)
the construction of well.
(D)
construction of bore wells
Question-7
Name one non-biodegradable waste which may pollute the earth to dangerous levels of toxicity, if not handled properly.
(A)
DDT
(B)
CFC
(C)
Radioactive substances
(D)
PAN
Question-8
Within the soil, bacteria function to:
(A)
raise the temperature of the water
(B)
synthesize new proteins
(C)
return inorganic matter from organic matter
(D)
capture light energy
Question-9
The presence of high coliform counts in water indicate:
(A)
contamination by human wastes
(B)
phosphorus contamination
(C)
decreased biological oxygen demand
(D)
hydrocarbon contamination
Question-10
Which of the following associations between children, adults, and pesticides is correct?
(A)
Children are more susceptible to pesticides because they weigh substantially less than adults.
(B)
Lethal doses of pesticides are larger for children than for adults.
(C)
Children are more sensitive to pesticides than adults because adults have built up immunity to the pesticide chemicals.
(D)
Children have more stringent pesticide regulations to protect their health than do adults.
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Cambridge Secondary Grade 9
IGCSE
Practice in Related Chapters
The Interdependence of Living Organisms
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Keeping Healthy
Transport in Plants
Classification
Cells and Tissues
Movement in and out of Cells
Personal Health
Animal Nutrition
Reproduction
Sensitivity
Cells the Building Blocks
Genetics
The Skeleton, Muscles and Movement
A Sexual Reproduction and Cloning Plants
The Senses
Survival
Co-ordination
Energy for Respiration
The Chemicals of Living Cells
How Substances Get In and Out of Cells
Plants for Food
Photosynthesis and Nutrition in Plants
Plant Structure and Function
Food and Diet
The Human Impact on the Environment
Digestion, Absorption and Use of Food
The Blood Circulatory System
Breathing
Excretion and the Kidneys
Human Reproduction
Classification
Conservation
Micro Organisms
Reproduction in Flowering Plants
Movement and Locomotion
Growth and Development
Disease: causes, transmission and control
Ecosystems
Population
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