(SEM-I) THEORY EXAMINATION 2022-23 ENVIRONMENT AND ECOLOGY

This question paper evaluates a student’s understanding of Environmental Studies, including concepts related to ecology, ecosystems, biodiversity, environmental pollution, environmental laws, sustainability, and environmental protection strategies.
It allows students to answer in Hindi, English, or mixed language, ensuring flexibility and inclusivity.

The question paper is divided into three major sections—Section A (short-concept questions), Section B (descriptive questions), and Section C (long analytical/essay-type questions). The paper tests conceptual clarity, analytical ability, practical understanding, and awareness of environmental issues.

SECTION A – Very Short Answer Type Questions (2 × 7 = 14 Marks)

This section contains seven compulsory questions, designed to test fundamental concepts. Topics include:

Environment

Definition, components (biotic & abiotic) and segments (atmosphere, hydrosphere, lithosphere, biosphere).

Ecology

Basic ecological concepts; definition of producers, consumers, and decomposers.

Sustainable Development

Concept and importance in the modern world.

Pond Ecosystem

Structure, components, functional aspects, and energy flow.

Fluorosis

Meaning, causes (excess fluoride), symptoms, and preventive measures.

Global Warming

Definition, causes, responsible greenhouse gases (CO₂, CH₄, N₂O, CFCs).

Environmental Education

Meaning and how environmental literacy leads to environmental protection.

This section ensures students have basic scientific literacy about environmental concepts.

SECTION B – Short / Medium Answer Type (7 × any 3 = 21 Marks)

Students answer any three questions, which require explanation with examples, diagrams, and conceptual clarity.

Topics include:

Ecological Pyramids

Definition and explanation of upright and inverted ecological pyramids (number, biomass, energy).

Biogeochemical Cycles

Material cycles: explanation of the carbon cycle with diagram.

Key Environmental Incidents

Short notes on:

London Smog (1952)

Bhopal Gas Tragedy (1984)

Acid Rain

Definition, responsible gases (SO₂, NOx), causes, effects, and preventive measures.

Women’s Education Policies

Government strategies and schemes promoting girl/women education in India.

This section tests a student's ability to relate environmental knowledge with real-world examples.

SECTION C – Long / Essay Type (7 × 3 = 21 Marks)

Students must answer one question from each group, requiring detailed explanation, diagrams, analysis, examples, and justification.

GROUP 1

(a) Food Chain & Food Web

Concept, structure, types (grazing & detritus food chain), food webs, with examples and illustrations.

(b) Environmental Impact Assessment (EIA)

Meaning, significance, objectives, and detailed steps:
screening, scoping, baseline data, impact prediction, mitigation, reporting, review, public consultation, decision-making, monitoring.

GROUP 2

(a) Deforestation

Meaning, causes (urbanization, agriculture, mining), environmental impacts (soil erosion, biodiversity loss), and control measures.

(b) Energy Resources

Types of:

Conventional (coal, petroleum, natural gas, hydro)

Non-conventional (solar, wind, geothermal, biomass)
Comparison based on renewability, pollution, availability, and sustainability.

GROUP 3

(a) Transportation Emissions

Major pollutants (CO, NOx, SO₂, PM, hydrocarbons), causes, health/ecosystem impacts, and control strategies.

(b) Waterborne & Water-induced Diseases

Examples, causes, symptoms, effects, and remedies for diseases such as cholera, typhoid, diarrhoea, fluorosis, arsenicosis, etc.

GROUP 4

(a) Ozone Hole

Formation, depletion reactions involving CFCs, effects (UV-B exposure), and global control measures (Montreal Protocol).

(b) Greenhouse Effect

Meaning, major greenhouse gases, causes of enhanced greenhouse effect, environmental impacts, and mitigation strategies.

GROUP 5

(a) NGO and Environmental Protection

Meaning of NGO and the role of NGOs in awareness, conservation, policy advocacy, waste management, and community participation.

(b) Environmental Protection Act 1986

Key features, provisions, powers granted, and roles of major environmental laws such as:

Water Act (1974)

Air Act (1981)

Wildlife Protection Act (1972)

Forest Conservation Act (1980)

PURPOSE OF THE QUESTION PAPER

The aim is to evaluate whether students can:

Understand and explain environmental concepts
Analyze interrelationships among ecosystems
Identify environmental problems and propose practical solutions
Understand environmental policies, laws, and global issues
Apply scientific concepts to real-world environmental challenges