UPSC Static Quiz – Environment : 18 December 2025

UPSC Static Quiz – Environment : 18 December 2025 We will post 5 questions daily on static topics mentioned in the UPSC civil services preliminary examination syllabus. Each week will focus on a specific topic from the syllabus, such as History of India and Indian National Movement, Indian and World Geography, and more. We are excited to bring you our daily UPSC Static Quiz, designed to help you prepare for the UPSC Civil Services Preliminary Examination. Each day, we will post 5 questions on static topics mentioned in the UPSC syllabus. This week, we are focusing on Indian and World Geography.

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• Question 1 of 5 1. Question Consider the following statements regarding Biotope. It is an ecological area that is usually larger than an ecosystem. It supports a particular range of biological communities. It is a common practice to isolate biotopes from each other for niche biodiversity propagation. How many of the above statements is/are incorrect? (a) Only one (b) Only two (c) All three (d) None Correct Solution: B Only Statement 2 is correct. Biotope is an ecological area that supports a particular range of biological communities. Biotope is almost synonymous with the term habitat. A biotope is generally not considered to be a large-scale phenomenon. For example, a biotope might be a neighbouring park, a back garden, even potted plants or a fish tank. In other words, the biotope is not a macroscopic but a microscopic approach to preserving the ecosystem and biological diversity. It is commonly emphasised that biotopes should not be isolated. Instead biotopes need to be connected to each other and other surrounding life for without these connections to life-forms such as animals and plants, biotopes would not effectively work as a place in which diverse organisms live. So one of the most effective strategies for regenerating biotopes is to plan a stretch of biotopes, not just a point where animals and plants come and go. Incorrect Solution: B Only Statement 2 is correct. Biotope is an ecological area that supports a particular range of biological communities. Biotope is almost synonymous with the term habitat. A biotope is generally not considered to be a large-scale phenomenon. For example, a biotope might be a neighbouring park, a back garden, even potted plants or a fish tank. In other words, the biotope is not a macroscopic but a microscopic approach to preserving the ecosystem and biological diversity. It is commonly emphasised that biotopes should not be isolated. Instead biotopes need to be connected to each other and other surrounding life for without these connections to life-forms such as animals and plants, biotopes would not effectively work as a place in which diverse organisms live. So one of the most effective strategies for regenerating biotopes is to plan a stretch of biotopes, not just a point where animals and plants come and go.

#### 1. Question

Consider the following statements regarding Biotope.

• It is an ecological area that is usually larger than an ecosystem.

• It supports a particular range of biological communities.

• It is a common practice to isolate biotopes from each other for niche biodiversity propagation.

How many of the above statements is/are incorrect?

• (a) Only one

• (b) Only two

• (c) All three

Solution: B

Only Statement 2 is correct.

Biotope is an ecological area that supports a particular range of biological communities.

Biotope is almost synonymous with the term habitat.

A biotope is generally not considered to be a large-scale phenomenon. For example, a biotope might be a neighbouring park, a back garden, even potted plants or a fish tank.

In other words, the biotope is not a macroscopic but a microscopic approach to preserving the ecosystem and biological diversity.

It is commonly emphasised that biotopes should not be isolated. Instead biotopes need to be connected to each other and other surrounding life for without these connections to life-forms such as animals and plants, biotopes would not effectively work as a place in which diverse organisms live.

So one of the most effective strategies for regenerating biotopes is to plan a stretch of biotopes, not just a point where animals and plants come and go.

Solution: B

Only Statement 2 is correct.

Biotope is an ecological area that supports a particular range of biological communities.

Biotope is almost synonymous with the term habitat.

A biotope is generally not considered to be a large-scale phenomenon. For example, a biotope might be a neighbouring park, a back garden, even potted plants or a fish tank.

In other words, the biotope is not a macroscopic but a microscopic approach to preserving the ecosystem and biological diversity.

So one of the most effective strategies for regenerating biotopes is to plan a stretch of biotopes, not just a point where animals and plants come and go.

• Question 2 of 5 2. Question Light pollution can have which of the following effects on the ecology and biodiversity? It disturbs circadian rhythms in humans affecting the sleep pattern. It adversely affects the migration of birds that navigate using the stars. It is known to disturb the reproductive cycles of some animals. Select the correct answer code: (a) 3 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3 Correct Solution: D Light pollution is excessive brightness that causes visual discomfort. Skyglow is the brightening of the night sky over inhabited areas. It is caused by cluttered, bright, excessive and confusing groupings of light sources. It affects the reproductive cycles of those animals that depend on sensing light movements or seasonal movements to reproduce. Since birds migrate using star light, it can confuse them, and even disorient night-flying insects. Excessive blue light emitted from LEDs directly affects sleep pattern in Human by suppressing the production of the hormone melatonin, which mediates the sleep-wake cycle in humans. Incorrect Solution: D Light pollution is excessive brightness that causes visual discomfort. Skyglow is the brightening of the night sky over inhabited areas. It is caused by cluttered, bright, excessive and confusing groupings of light sources. It affects the reproductive cycles of those animals that depend on sensing light movements or seasonal movements to reproduce. Since birds migrate using star light, it can confuse them, and even disorient night-flying insects. Excessive blue light emitted from LEDs directly affects sleep pattern in Human by suppressing the production of the hormone melatonin, which mediates the sleep-wake cycle in humans.

#### 2. Question

Light pollution can have which of the following effects on the ecology and biodiversity?

• It disturbs circadian rhythms in humans affecting the sleep pattern.

• It adversely affects the migration of birds that navigate using the stars.

• It is known to disturb the reproductive cycles of some animals.

Select the correct answer code:

• (a) 3 only

• (b) 1 and 3 only

• (c) 2 and 3 only

• (d) 1, 2 and 3

Solution: D

Light pollution is excessive brightness that causes visual discomfort.

• Skyglow is the brightening of the night sky over inhabited areas. It is caused by cluttered, bright, excessive and confusing groupings of light sources.

• It affects the reproductive cycles of those animals that depend on sensing light movements or seasonal movements to reproduce. Since birds migrate using star light, it can confuse them, and even disorient night-flying insects.

• Excessive blue light emitted from LEDs directly affects sleep pattern in Human by suppressing the production of the hormone melatonin, which mediates the sleep-wake cycle in humans.

Solution: D

Light pollution is excessive brightness that causes visual discomfort.

• Skyglow is the brightening of the night sky over inhabited areas. It is caused by cluttered, bright, excessive and confusing groupings of light sources.

• Excessive blue light emitted from LEDs directly affects sleep pattern in Human by suppressing the production of the hormone melatonin, which mediates the sleep-wake cycle in humans.

• Question 3 of 5 3. Question Consider the following statements regarding Invasive alien species. Invasive alien species are animals, plants or other organisms that are introduced by humans, either intentionally or accidentally, into places outside of their natural range. The Kunming-Montreal Global Biodiversity Framework aims to completely reduce the rate of invasive alien species introduction by 2030. Lantana Camara is an Invasive species that threatens India’s tiger habitat. How many of the above statements is/are incorrect? a) Only one b) Only two c) All three d) None Correct Solution: A Statement 2 is incorrect. Invasive alien species are animals, plants or other organisms that are introduced by humans, either intentionally or accidentally, into places outside of their natural range, negatively impacting native biodiversity, ecosystem services or human economy and well-being. Target 6 of the Kunming-Montreal Global Biodiversity Framework aims to reduce the rate of invasive alien species introduction by at least 50% by 2030. Lantana Camara invasion threatens 40 per cent of India’s tiger habitat Incorrect Solution: A Statement 2 is incorrect. Invasive alien species are animals, plants or other organisms that are introduced by humans, either intentionally or accidentally, into places outside of their natural range, negatively impacting native biodiversity, ecosystem services or human economy and well-being. Target 6 of the Kunming-Montreal Global Biodiversity Framework aims to reduce the rate of invasive alien species introduction by at least 50% by 2030. Lantana Camara invasion threatens 40 per cent of India’s tiger habitat

#### 3. Question

Consider the following statements regarding Invasive alien species.

• Invasive alien species are animals, plants or other organisms that are introduced by humans, either intentionally or accidentally, into places outside of their natural range.

• The Kunming-Montreal Global Biodiversity Framework aims to completely reduce the rate of invasive alien species introduction by 2030.

• Lantana Camara is an Invasive species that threatens India’s tiger habitat.

How many of the above statements is/are incorrect?

• a) Only one

• b) Only two

• c) All three

Solution: A

Statement 2 is incorrect.

Invasive alien species are animals, plants or other organisms that are introduced by humans, either intentionally or accidentally, into places outside of their natural range, negatively impacting native biodiversity, ecosystem services or human economy and well-being.

Target 6 of the Kunming-Montreal Global Biodiversity Framework aims to reduce the rate of invasive alien species introduction by at least 50% by 2030.

Lantana Camara invasion threatens 40 per cent of India’s tiger habitat

Solution: A

Statement 2 is incorrect.

Target 6 of the Kunming-Montreal Global Biodiversity Framework aims to reduce the rate of invasive alien species introduction by at least 50% by 2030.

Lantana Camara invasion threatens 40 per cent of India’s tiger habitat

• Question 4 of 5 4. Question Consider the following statements. The World Wildlife Day (WWD) is celebrated to mark the establishment of CITES. CITES is an international agreement between governments, that aim to ensure that international trade in specimens of wild animals and plants does not threaten the survival of the species. The CITES Secretariat is administered by International Union for Conservation of Nature(IUCN). Which of the above statements are correct? (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3 Correct Solution: A Statement 3 is incorrect. In 2013, the United Nations General Assembly (UNGA) proclaimed March 3 as the UN World Wildlife Day to celebrate and raise awareness of protecting the world’s wild animals and plants. This was as the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) was signed in 1973 on this day. CITES is an international agreement between governments. Its aim is to ensure that international trade in specimens of wild animals and plants does not threaten the survival of the species. It accords varying degrees of protection to more than 37,000 species of animals and plants, ranging from live animals and plants to wildlife products derived from them, including food products, exotic leather goods, medicines, etc. The CITES Secretariat is administered by UNEP (The United Nations Environment Programme) and is located in Geneva, Switzerland. The Conference of the Parties to CITES is the supreme consensus-based decision-making body of the Convention and comprises all its parties. Incorrect Solution: A Statement 3 is incorrect. In 2013, the United Nations General Assembly (UNGA) proclaimed March 3 as the UN World Wildlife Day to celebrate and raise awareness of protecting the world’s wild animals and plants. This was as the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) was signed in 1973 on this day. CITES is an international agreement between governments. Its aim is to ensure that international trade in specimens of wild animals and plants does not threaten the survival of the species. It accords varying degrees of protection to more than 37,000 species of animals and plants, ranging from live animals and plants to wildlife products derived from them, including food products, exotic leather goods, medicines, etc. The CITES Secretariat is administered by UNEP (The United Nations Environment Programme) and is located in Geneva, Switzerland. The Conference of the Parties to CITES is the supreme consensus-based decision-making body of the Convention and comprises all its parties.

#### 4. Question

Consider the following statements.

• The World Wildlife Day (WWD) is celebrated to mark the establishment of CITES.

• CITES is an international agreement between governments, that aim to ensure that international trade in specimens of wild animals and plants does not threaten the survival of the species.

• The CITES Secretariat is administered by International Union for Conservation of Nature(IUCN).

Which of the above statements are correct?

• (a) 1 and 2 only

• (b) 1 and 3 only

• (c) 2 and 3 only

• (d) 1, 2 and 3

Solution: A

Statement 3 is incorrect.

In 2013, the United Nations General Assembly (UNGA) proclaimed March 3 as the UN World Wildlife Day to celebrate and raise awareness of protecting the world’s wild animals and plants. This was as the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) was signed in 1973 on this day.

CITES is an international agreement between governments. Its aim is to ensure that international trade in specimens of wild animals and plants does not threaten the survival of the species.

It accords varying degrees of protection to more than 37,000 species of animals and plants, ranging from live animals and plants to wildlife products derived from them, including food products, exotic leather goods, medicines, etc.

The CITES Secretariat is administered by UNEP (The United Nations Environment Programme) and is located in Geneva, Switzerland. The Conference of the Parties to CITES is the supreme consensus-based decision-making body of the Convention and comprises all its parties.

Solution: A

Statement 3 is incorrect.

CITES is an international agreement between governments. Its aim is to ensure that international trade in specimens of wild animals and plants does not threaten the survival of the species.

• Question 5 of 5 5. Question Consider the following statements regarding ‘re-wilding’ of wild animals. Re-wilding means reintroduction of the cub into the wild after a certain time when it appears that the cub is capable of surviving in the wild independently. The guidelines for the ‘re-wilding’ of wild animals are laid down in the Wildlife Protection Act, 1972. In India, Endangered species and scavengers are prohibited for ‘re-wilding’. Which of the above statements are correct? (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3 Correct Solution: A Statement 3 is incorrect. As per the Standard Operating Procedures/Guidelines laid down by the National Tiger Conservation Authority (NTCA) under Section 38(O) of The Wildlife Protection Act, 1972, there are three ways to deal with orphaned or abandoned tiger cubs. The first is to make an effort to reunite the abandoned cubs with their mother. Second, if a reunion of the cub with its mother is not possible, then shift the cub to a suitable zoo. Third, reintroduction of the cub into the wild after a certain time when it appears that the cub is capable of surviving in the wild independently. This is what is known as ‘re-wilding’. Re-wilding is not limited to cats. There have been efforts to reintroduce other endangered species, including scavengers, into the wild after rearing them in captivity. Incorrect Solution: A Statement 3 is incorrect. As per the Standard Operating Procedures/Guidelines laid down by the National Tiger Conservation Authority (NTCA) under Section 38(O) of The Wildlife Protection Act, 1972, there are three ways to deal with orphaned or abandoned tiger cubs. The first is to make an effort to reunite the abandoned cubs with their mother. Second, if a reunion of the cub with its mother is not possible, then shift the cub to a suitable zoo. Third, reintroduction of the cub into the wild after a certain time when it appears that the cub is capable of surviving in the wild independently. This is what is known as ‘re-wilding’. Re-wilding is not limited to cats. There have been efforts to reintroduce other endangered species, including scavengers, into the wild after rearing them in captivity.

#### 5. Question

Consider the following statements regarding ‘re-wilding’ of wild animals.

• Re-wilding means reintroduction of the cub into the wild after a certain time when it appears that the cub is capable of surviving in the wild independently.

• The guidelines for the ‘re-wilding’ of wild animals are laid down in the Wildlife Protection Act, 1972.

• In India, Endangered species and scavengers are prohibited for ‘re-wilding’.

Which of the above statements are correct?

• (a) 1 and 2 only

• (b) 1 and 3 only

• (c) 2 and 3 only

• (d) 1, 2 and 3

Solution: A

Statement 3 is incorrect.

As per the Standard Operating Procedures/Guidelines laid down by the National Tiger Conservation Authority (NTCA) under Section 38(O) of The Wildlife Protection Act, 1972, there are three ways to deal with orphaned or abandoned tiger cubs.

The first is to make an effort to reunite the abandoned cubs with their mother.

Second, if a reunion of the cub with its mother is not possible, then shift the cub to a suitable zoo.

Third, reintroduction of the cub into the wild after a certain time when it appears that the cub is capable of surviving in the wild independently. This is what is known as ‘re-wilding’.

Re-wilding is not limited to cats. There have been efforts to reintroduce other endangered species, including scavengers, into the wild after rearing them in captivity.

Solution: A

Statement 3 is incorrect.

The first is to make an effort to reunite the abandoned cubs with their mother.

Second, if a reunion of the cub with its mother is not possible, then shift the cub to a suitable zoo.

Third, reintroduction of the cub into the wild after a certain time when it appears that the cub is capable of surviving in the wild independently. This is what is known as ‘re-wilding’.

Re-wilding is not limited to cats. There have been efforts to reintroduce other endangered species, including scavengers, into the wild after rearing them in captivity.

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