ASSEB Class 11 Environmental Education 2025 Solved Question Paper [AHSEC H.S 1st Year EVS Solved Question Papers]

ASSEB 11th Environmental Education Solved Question Paper 2025 is essential for all HS 1st Year students preparing for the AHSEC / ASSEB Class 11 Political Science Exam 2025. This solved paper helps students understand the latest exam pattern, marking scheme, and the type of questions asked in the HS 1st Year Environmental Education Question Paper 2025. Here you will get the complete ASSEB Class 11 Environmental Education Solved Question Paper 2025 with accurate and exam-oriented answers.

ASSEB Class 11 Environmental Education Solved Question Paper 2025

This HS 1st Year Environmental Education Solved Question Paper 2025 follows the official blueprint of ASSEB/AHSEC, ensuring that students get authentic and reliable solutions. The answers included in this ASSEB Environmental Education Solved Paper 2025 help you revise important chapters, theories, thinkers, constitutional topics, and political concepts strictly as per the exam requirements.

EXAMINATION: 2025  

ENVIRONMENTAL EDUCATION  

Full Marks: 80

Pass Marks: 24, Time: 3 hours

The figures in the margin indicate full marks for the questions.  

1. Answer in short (any five) (1×5 = 5)

(i) From which year did the Environment (Protection) Act come into force?
Answer: 1986

(ii) What are omnivores in an ecosystem?
Answer: Animals that eat both plants and animals.

(iii) What is a species?
Answer: A group of similar organisms that can reproduce among themselves.

(iv) How much of the surface of the Earth is covered by water?
Answer: About 71%.

(v) Give the names of two greenhouse gases.
Answer: Carbon dioxide and methane.

1 (b). Fill in the blanks (any three) (1×3 = 3)

(i) The only Ramsar Site in Assam is Deepor Beel.
(ii) The World Environment Day is celebrated on 5th June of every year.
(iii) Ozone layer is found in the stratospheric atmospheric layer.
(iv) AIDS is caused by HIV.
(v) Cyclones are natural disasters.

2. Answer in short (any five) (2×5 = 10)

(a) Write on the significance of environmental education.
Answer: Environmental education helps people understand the importance of protecting nature. It creates awareness about pollution, conservation of resources, and sustainable living so that the environment can be saved for the future.

(b) What is a hydrological cycle?
Answer: The hydrological cycle is the continuous movement of water on Earth. Water evaporates, forms clouds through condensation, and returns to the ground as rain, maintaining the planet’s water balance.

(c) What is your idea about ex situ conservation?
Answer: Ex situ conservation means protecting endangered species outside their natural habitats. It includes zoos, seed banks, aquariums, and botanical gardens where species are safely preserved and bred.

(d) Define weather.
Answer: Weather refers to the short-term condition of the atmosphere at a particular place and time. It includes daily changes in temperature, rainfall, humidity, sunshine, and wind.

(e) What is an ecological pyramid?
Answer: An ecological pyramid is a diagram that shows the structure of an ecosystem. It represents the number, biomass, or energy of organisms at different trophic levels in a food chain.

(f) Write on traffic pollution.
Answer: Traffic pollution is caused by smoke and harmful gases released by vehicles. It leads to air pollution, health problems, noise pollution, and increased greenhouse gases in cities.

(g) How can you stop man-made disasters?
Answer: Man-made disasters can be reduced by following safety rules, using technology responsibly, and avoiding harmful activities like deforestation, improper waste disposal, and unsafe industrial practices.

(h) Give the names of diseases caused due to water pollution.
Answer: Water pollution causes several diseases such as cholera, typhoid, hepatitis A, and diarrhoea, which spread through contaminated drinking water.

3. Define and distinguish between (any four) (1+2)×4 = 12

(a) In situ and Ex situ conservation

Answer:  In situ conservation:  This method protects plants and animals within their natural habitats, allowing them to grow, survive, and adapt in the environment where they originally exist. It helps preserve entire ecosystems, natural relationships, and biodiversity in the wild.

Ex situ conservation:  This method protects endangered plants and animals outside their natural habitats by keeping them in controlled places such as zoos, botanical gardens, seed banks, and gene banks. It provides special care and scientific techniques to save species that cannot survive in the wild.

Difference Between In situ and Ex situ Conservation

Basis	In situ Conservation	Ex situ Conservation
1. Habitat	Species remain in their original natural environment.	Species are removed from nature and kept in man-made or controlled environments.
2. Conservation Focus	Protects entire ecosystems and natural food chains.	Protects only selected endangered species.
3. Adaptation	Species continue natural adaptation and survival skills.	Species may lose natural behaviour due to artificial conditions.
4. Cost	Less expensive because nature supports itself.	More expensive due to scientific care, facilities, and management.
5. Examples	National parks, wildlife sanctuaries, biosphere reserves.	Zoos, aquariums, botanical gardens, seed banks, gene banks.

(b) Natural and Man-made disasters

Answer:
Natural disasters:  These are destructive events caused only by natural forces such as earthquakes, floods, cyclones, droughts, or volcanic eruptions. They occur without human control and often cause sudden and widespread damage.

Man-made disasters: These are harmful events that occur due to human errors, negligence, or unsafe activities, such as industrial accidents, oil spills, nuclear explosions, fires, and pollution. Most of these disasters can be prevented with proper safety measures.

Difference Between Natural and Man-made Disasters

Basis	Natural Disasters	Man-made Disasters
1. Cause	Occur due to natural processes of Earth and atmosphere.	Occur due to human activities or technical failures.
2. Prevention	Cannot be prevented, only their effects can be reduced.	Mostly preventable with proper planning and safety rules.
3. Examples	Earthquake, tsunami, cyclone, flood.	Fire accidents, chemical leaks, oil spills, pollution.
4. Warning	Often unpredictable or give short warning.	Usually predictable as human actions cause them.
5. Impact	Usually large-scale and affects many people suddenly.	Impact varies based on the seriousness of human error.

(c) Weather and Climate
Weather: Weather refers to the day-to-day condition of the atmosphere of a particular place. It includes short-term changes in temperature, rainfall, humidity, wind speed, and sunlight that may change within minutes or hours.

Climate: Climate is the average weather condition of a place measured over a long period, usually 30 years or more. It shows long-term patterns such as hot summers, cold winters, or rainy monsoons in a region.

Difference Between Weather and Climate

Basis	Weather	Climate
1. Duration	Short-term conditions lasting for hours or days.	Long-term weather patterns lasting for decades.
2. Change	Changes very quickly and frequently.	Changes slowly and remains stable for many years.
3. Area	Applies to a small area like a city.	Applies to a large area, region, or country.
4. Elements	Temperature, humidity, rainfall, clouds, wind.	Long-term averages of temperature and rainfall patterns.
5. Influence	Influenced by immediate atmospheric conditions.	Influenced by factors like latitude, altitude, and distance from sea.

(d) Renewable and Non-renewable natural resources
Renewable resources:  These are natural resources that can be replaced or regenerated naturally within a short time. Examples include sunlight, wind, water, and forests, which can be reused without getting permanently exhausted if managed properly.

Non-renewable resources:  These are resources that do not replenish easily and take millions of years to form. Examples include coal, petroleum, diesel, natural gas, and minerals. Once used up, they cannot be replaced quickly.

Difference Between Renewable and Non-renewable Resources

Basis	Renewable Resources	Non-renewable Resources
1. Availability	Naturally replenished and available for long-term use.	Limited in quantity and may run out.
2. Time of Formation	Form quickly or continuously through natural cycles.	Take millions of years to form.
3. Environmental Impact	Cause little pollution and are eco-friendly.	Cause high pollution and environmental damage.
4. Examples	Solar energy, wind energy, water, forests.	Coal, petroleum, diesel, natural gas.
5. Sustainability	Sustainable for future generations.	Not sustainable due to rapid depletion.

4. Answer the following questions elaborately (any two) (5×2 = 10)

(a) Write on the energy flow in an ecosystem.
Answer:
Energy flow in an ecosystem means how energy moves from one living organism to another. The sun is the main source of energy. Green plants take sunlight and make food through photosynthesis. Herbivores eat these plants and get energy. Carnivores then eat herbivores and receive that energy. This creates a food chain. Many food chains together form a food web.
At every step, some energy is lost as heat, so the higher levels always get less energy. Energy flows in one direction only — from the sun to plants, then to animals, and finally to decomposers. This flow of energy helps keep the ecosystem balanced and working properly.

(b) Give two important social issues and write on their remedies.
Answer:  Two important social issues are poverty and gender discrimination.
Poverty means people do not have enough money, food, education or healthcare. To reduce poverty, the government can create jobs, provide skill training, offer free or low-cost education, and give support through welfare schemes.
Gender discrimination means treating people unfairly based on gender, usually against women. Remedies include giving equal opportunities in education and jobs, enforcing laws that protect women’s rights, ensuring equal pay, and spreading awareness to change harmful social attitudes. These steps help build a fair and equal society.

(c) What is a pollutant? Write on the impacts of air pollution. Answer: A pollutant is any harmful substance that enters the environment and causes damage to living beings or nature.
Air pollution has many harmful effects. It causes breathing problems like asthma, cough, lung infections, and even heart diseases. It also reduces visibility and creates smog in cities. Air pollution damages crops, harms animals, and affects the natural balance of the environment. It can also lead to acid rain, which damages soil, water bodies, buildings, and forests. Continuous air pollution also contributes to climate change.

(d) What are disasters? Write on the impacts of man-made disasters.
Answer:  Disasters are sudden events that cause great damage to life, property and the environment. They can be natural or man-made.
Man-made disasters happen because of human activities such as industrial accidents, chemical leaks, fires, oil spills, or nuclear accidents. These disasters cause loss of life, injuries, and destruction of buildings and factories. They also pollute air, water and soil, harming plants, animals and ecosystems. People may lose their homes and jobs, leading to long-term social and economic problems. Man-made disasters can also create fear, stress and mental health issues among affected people.

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