Question 1

Red Data Book Provides data on
A)Red flowered plants
B)Red colored fishes
C)Lists of plants and animals
D)Endangered plants and animals

Accepted Answer

The Red Data Book is a comprehensive guide that provides information on the status of various species, including those that are endangered or threatened, focusing on plants and animals at risk of extinction.

Question 2

Wild life is continuously decreasing. What is the main reason of this?
A)Predation
B)Cutting down of forest
C)Destruction of habitat
D)Hunting

Accepted Answer

Destruction of habitat is the main reason for the continuous decrease in wildlife. When natural habitats are destroyed or fragmented, it disrupts the ecosystem and makes it difficult for wildlife to survive.

Question 3

What is the major cause of diminishing wildlife number?
A)Felling of trees
B)Cannibalism
C)Habitat destruction
D)Paucity of drinking water

Accepted Answer

Habitat destruction, which includes deforestation (felling of trees), urbanization, and other activities that lead to the loss of natural habitats, is the major cause of diminishing wildlife numbers. It affects the availability of food, shelter, and breeding grounds, leading to a decline in wildlife populations.

Question 4

Viable material of endangered species can be preserved by
A)Gene bank
B)Gene library
C)Gene pool
D)Herbarium

Accepted Answer

Gene banks are facilities where genetic material is stored, including seeds, sperm, eggs, or DNA of endangered species, to preserve their genetic diversity for future generations.

Question 5

Which of the following is mainly responsible for the extinction of wild life
A)Pollution of air and water
B)Hunting of flesh
C)Destruction of Habitats
D)All of these

Accepted Answer

All of the options listed contribute significantly to the extinction of wildlife. Pollution of air and water can lead to habitat degradation and directly harm wildlife health. Hunting, especially when unregulated, can lead to significant declines in animal populations. Destruction of habitats, perhaps the most direct cause, removes the very environments necessary for wildlife survival. Therefore, all these factors collectively play a major role in wildlife extinction.

Question 6

The unfavourable alteration of environment due to human activities is termed as
A)ecological disturbance
B)catastrophe
C)ecological degradation
D)pollution

Accepted Answer

Pollution specifically refers to the introduction of harmful substances or products into the environment due to human activities, leading to its degradation.

Question 7

Which of the following is the best indicator of SO₂ pollution A)bryophyte B)pteridophyte C)Lichen D)algae

Accepted Answer

Lichens are widely recognized as sensitive indicators of air pollution, particularly to sulfur dioxide. They absorb water and nutrients directly from the atmosphere, making them highly susceptible to airborne pollutants. When air quality is poor, lichen diversity and abundance typically decrease.

Question 8

Heavy dust can cause
A)leaf blights
B)opening of stomata
C)closure of stomata
D)browning of leaves

Accepted Answer

Heavy dust can cause the closure of stomata, which are tiny openings on the surfaces of leaves that allow for gas exchange. When these openings are blocked by dust, it can lead to reduced transpiration and gas exchange, potentially harming the plant.

Question 9

Which of the following is the major cause of pollution
A)plants
B)man
C)fungi
D)hydrocarbon gases

Accepted Answer

The answer of Which of the following is the major...

Question 10

Minamata disease was caused by pollution of water by
A)mercury
B)lead
C)tin
D)methyl iso cyanate

Accepted Answer

Minamata disease was caused by the consumption of fish and shellfish contaminated with methylmercury, which was discharged into Minamata Bay and the Shiranui Sea by industrial wastewater from the Chisso Corporation's chemical factory.

Question 11

A river with high BOD value is
A)highly polluted
B)highly clean
C)highly productive
D)none of these

Accepted Answer

A high Biological Oxygen Demand (BOD) value indicates that a river is highly polluted because it suggests a high level of organic matter in the water, which requires oxygen for decomposition, thereby reducing the oxygen available for aquatic life.

Question 12

5th June is observed as
A)world forest day
B)world environment day
C)world wildlife day
D)world population day

Accepted Answer

5th June is observed as World Environment Day, a day designated by the United Nations to encourage worldwide awareness and action to protect our environment.

Question 13

Cement factory labourers are prone to
A)leukemia
B)bone marrow disease
C)asbestosis
D)cytosilicosis

Accepted Answer

The answer of Cement factory labourers are prone to
A)leukemia
B)bone marrow...

Question 14

Noise is measured using sound meter and the unit is
A)hertz
B)decibel
C)joule
D)sound

Accepted Answer

Noise is measured in decibels (dB), which is a unit used to quantify the intensity of sound.

Question 15

The undesirable change in physical, chemical or biological characteristics of air, land and water is referred as
A)pollutants
B)ecodestructions
C)pollution
D)all of these

Accepted Answer

Pollution refers to the undesirable change in the physical, chemical, or biological characteristics of air, land, and water, which can harmfully affect life or create a potential health hazard.

Question 16

Which of the radioactive material is largely associated with bone cancer
A)radium-226
B)thorium-232
C)Strontium-90
D)iodine

Accepted Answer

Strontium-90 is a radioactive isotope that mimics calcium and can accumulate in bone tissues, potentially causing bone cancer.

Question 17

Lead poisoning A)reduces O₂ carrying capacity of haemoglobin in blood B)increases O₂ carrying capacity of haemoglobin in blood C)reduces O₂ carrying capacity of myoglobin in muscles D)increases O₂ carrying capacity of myoglobin in muscles

Accepted Answer

Lead poisoning interferes with the normal function of hemoglobin, reducing its ability to carry oxygen in the blood.

Question 18

The occurrence of pesticides like DDT in higher trophic levels is termed as
A)bioremediation
B)biomagnification
C)biological enhancement
D)biopollution

Accepted Answer

Biomagnification refers to the increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food chain. DDT, a pesticide, is a classic example of a substance that undergoes biomagnification.

Question 19

Earth summit was held in
A)Stockholm in 1972
B)Rio de Jeneiro in 1992
C)Paris in 1992
D)New York in 1972

Accepted Answer

The Earth Summit, officially known as the United Nations Conference on Environment and Development (UNCED), was held in Rio de Janeiro, Brazil, in 1992. It was a major international conference to address environmental and developmental issues.

Question 20

All are physical pollutants except
A)heat
B)sound
C)radiations
D)soot

Accepted Answer

Soot is considered a particulate pollutant, not a physical pollutant. Physical pollutants typically include heat, sound, and radiation.

Quiz 4: Environmental Issues and Pollution

Red Data Book Provides data on

Wild life is continuously decreasing. What is the main reason of this?

What is the major cause of diminishing wildlife number?

Viable material of endangered species can be preserved by

Which of the following is mainly responsible for the extinction of wild life

The unfavourable alteration of environment due to human activities is termed as

Which of the following is the best indicator of SO2 pollution

Heavy dust can cause

Which of the following is the major cause of pollution

Minamata disease was caused by pollution of water by

A river with high BOD value is

5th June is observed as

Cement factory labourers are prone to

Noise is measured using sound meter and the unit is

The undesirable change in physical, chemical or biological characteristics of air, land and water is referred as

Which of the radioactive material is largely associated with bone cancer

Lead poisoning

The occurrence of pesticides like DDT in higher trophic levels is termed as

Earth summit was held in

All are physical pollutants except

Which of the following is the best indicator of SO₂ pollution