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100+ Free WBCHSE HS ENVS Practice Questions

Prepare for the WBCHSE Higher Secondary Environment Studies exam with instant access — no signup required.

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Key Facts: WBCHSE HS ENVS Exam

ENVS

Official WBCHSE subject code

https://wbchse.wb.gov.in/subjects/

30%

Minimum pass in theory and practical/project independently

https://wbchse.wb.gov.in/frequently-asked-questions-examination

INR 215

Class XII semester enrolment total (INR 190 to Council)

WBCHSE Memo L/PR/305/2025

bn+en

Non-language elective paper media (Bengali and English)

WBCHSE examination regulations

Sem I–IV

Higher Secondary semester system across Classes XI–XII

https://wbchse.wb.gov.in/annual-working-plan

Prepare for your WBCHSE Class 12 Environment Studies exam with these comprehensive practice questions covering the complete syllabus. English-language MCQ study adaptation for WBCHSE HS—not an official board paper.

Sample WBCHSE HS ENVS Practice Questions

Try these sample questions to test your WBCHSE HS ENVS exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which prominent biologist coined and popularised the term 'Biodiversity' to describe the variety of life on Earth?
A.Edward Wilson
B.Arthur Tansley
C.Ernst Haeckel
D.Eugene Odum
Explanation: Edward O. Wilson, often termed the 'father of biodiversity', popularised the term in 1985 to describe the biological variety and richness across ecosystems. He highlighted the urgent need for global conservation of genetic, species, and ecosystem diversity.
2Which level of biological diversity refers to the variation of genetic information within individuals of a single species?
A.Ecosystem diversity
B.Genetic diversity
C.Species diversity
D.Alpha diversity
Explanation: Genetic diversity encompasses the total genetic information contained within the individuals of a single species. High genetic diversity enables populations to adapt to changing environmental conditions, diseases, and climate variations.
3In ecological studies, how is 'Alpha diversity' specifically defined?
A.Species diversity across a broad geographic landscape
B.Diversity of species between two distinct adjacent ecosystems
C.Species richness measured within a particular local habitat or ecosystem
D.Total species richness of an entire biome or continent
Explanation: Alpha diversity measures species richness and abundance within a specific, uniform local habitat or community. It provides a baseline for local ecosystem health and species composition.
4Who introduced the concept of 'Biodiversity Hotspots' in 1988 to identify biogeographic regions with high endemics under extreme threat?
A.Norman Myers
B.Raymond Dasmann
C.V. H. Heywood
D.Charles Darwin
Explanation: Norman Myers introduced the concept of biodiversity hotspots in 1988. To qualify as a hotspot, a region must contain at least 1,500 endemic vascular plant species and have lost at least 70% of its primary vegetation.
5How many globally recognized Biodiversity Hotspots overlap with the territorial boundaries of India?
A.2
B.4
C.6
D.8
Explanation: India is home to 4 global biodiversity hotspots: the Himalayas, Western Ghats, Indo-Burma, and Sundaland (including the Nicobar Islands). These regions host exceptional levels of endemic flora and fauna.
6Which endangered primate is endemic exclusively to the tropical rainforests of the Western Ghats of India?
A.Golden Langur
B.Lion-tailed Macaque
C.Capped Langur
D.Hoolock Gibbon
Explanation: The Lion-tailed Macaque (Macaca silenus) is an endangered primate endemic exclusively to the fragmented tropical rainforests of the Western Ghats. Habitat loss due to plantations and dams poses a severe threat to its survival.
7Nations that harbour a significant majority of Earth's species and high numbers of endemic species are categorized as:
A.Megadiverse countries
B.Ecotone nations
C.Biodiversity sinks
D.Industrial refuges
Explanation: Megadiverse countries are a group of 17 nations that contain more than 70% of the Earth's total biodiversity and a vast number of endemic species. India is recognized as one of these 17 megadiverse countries.
8Under the HIPPO acronym summarizing major threats to global biodiversity, what does the letter 'H' represent?
A.Habitat destruction and fragmentation
B.Hunting for commercial trade
C.Human population stagnation
D.Herbivore overgrazing
Explanation: In E. O. Wilson's HIPPO framework, 'H' stands for Habitat destruction and fragmentation, which remains the single greatest driver of species extinction worldwide.
9The ex-situ conservation process of preserving seeds, tissues, or reproductive cells at -196°C in liquid nitrogen is known as:
A.Cryopreservation
B.In-situ acclimatization
C.Micro-propagation
D.Thermal calcification
Explanation: Cryopreservation involves storing biological materials such as seeds, pollen, or gametes at ultra-low temperatures (-196°C) using liquid nitrogen. This halts metabolic processes, allowing long-term preservation of genetic diversity.
10In a standard Biosphere Reserve layout, which zone strictly restricts human intervention to allow non-destructive scientific monitoring and natural ecological processes?
A.Buffer zone
B.Transition zone
C.Core zone
D.Peripheral development zone
Explanation: The Core zone of a Biosphere Reserve receives maximum legal protection where human activity is strictly prohibited, except for non-intrusive research and monitoring. It safeguards natural ecosystem processes and wildlife breeding.

About the WBCHSE HS ENVS Exam

Environment Studies (ENVS) for West Bengal Higher Secondary examination covers topics related to human interaction with the environment, biodiversity, conservation, sustainable development, and environmental legislation. This OpenExamPrep bank is an English-language four-option MCQ study aid for WBCHSE Higher Secondary; it does not replace official Bengali/English board papers, descriptive answers, or required practical/project/performance evidence.

Assessment

WBCHSE Higher Secondary subject ENVS: Semesters I–IV across Classes XI–XII; theory examinations plus practical/project/performance where the syllabus requires them.

Time Limit

As per semester notification (typically 2–3 hours for theory sittings)

Passing Score

30% minimum in theory and in practical/project independently (WBCHSE examination FAQ)

Exam Fee

Semester enrolment fee structure (Council): Sem III/IV student total INR 215 (155 enrolment + 30 processing + 30 convenience), with INR 190 to Council and INR 25 centre grant; supplementary often INR 50/paper. Separately, the public Fees page lists Class XII examination fees (within schedule) about INR 205 lab / INR 195 non-lab / INR 135 special. Confirm the applicable circular for the sitting. (West Bengal Council of Higher Secondary Education (WBCHSE))

WBCHSE HS ENVS Exam Content Outline

core

Exam Overview & Structure

Comprehensive overview of the West Bengal Higher Secondary (in-wbchse-hs-environment-studies) examination covering key topics, marking scheme, and preparation strategies.

core

Syllabus Breakdown

Detailed unit-wise breakdown of the WBCHSE Class 11 and 12 curriculum for in-wbchse-hs-environment-studies, aligned with official council guidelines.

core

Study Tips & Exam Strategy

Proven preparation strategies, time management guidelines, and practice routines to achieve top scores in Higher Secondary assessments.

How to Pass the WBCHSE HS ENVS Exam

What You Need to Know

  • Passing score: 30% minimum in theory and in practical/project independently (WBCHSE examination FAQ)
  • Assessment: WBCHSE Higher Secondary subject ENVS: Semesters I–IV across Classes XI–XII; theory examinations plus practical/project/performance where the syllabus requires them.
  • Time limit: As per semester notification (typically 2–3 hours for theory sittings)
  • Exam fee: Semester enrolment fee structure (Council): Sem III/IV student total INR 215 (155 enrolment + 30 processing + 30 convenience), with INR 190 to Council and INR 25 centre grant; supplementary often INR 50/paper. Separately, the public Fees page lists Class XII examination fees (within schedule) about INR 205 lab / INR 195 non-lab / INR 135 special. Confirm the applicable circular for the sitting.

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

WBCHSE HS ENVS Study Tips from Top Performers

1Focus on the concept of sustainable development.
2Memorize important environmental laws and their years of enactment.
3Understand the causes and effects of various types of pollution.
4Study local environmental issues relevant to West Bengal.
5Practice previous years' question papers.

Frequently Asked Questions

What is the passing marks for HS ENVS?

Students must secure at least 30% in theory and in practical/project independently for the mandatory best-of-five subjects (two languages and three electives), per the Council examination FAQ.

Is ENVS compulsory?

Yes, Environment Studies is a compulsory subject in West Bengal HS.

Does ENVS have a project component?

Yes, it typically includes both theory and a project/practical component.

What are the main topics?

Biodiversity, Sustainable Development, Environmental Management, and Laws.

How long is the theory paper?

The theory paper is typically 2 to 3 hours long depending on the marks.

Are there MCQs in the exam?

Yes, the question paper includes multiple choice questions.

Are these MCQs identical to the official WBCHSE ENVS question paper?

No. Official non-language elective papers are set in Bengali and English under the semester system and may include descriptive and practical/project components. These items are an English MCQ study adaptation only.