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West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Biology Set 02 (Advanced Level) English Medium 100% Free Practice Test

West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Biology: Human Reproduction Online Test (Set 02 (Advanced Level))

Human Reproduction — Set 02 (Advanced Level)

Practise free online CBT mock test for West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Biology Chapter 2 'Human Reproduction'. 20 MCQs, 20-minute timer, instant scorecard, and step-by-step solutions aligned with official board syllabus.

📝
20 MCQs
Questions
⏱️
20 Mins
Duration
🎯
20 Marks
Total Marks
➕
+1.0
Per Correct
🛡️
0.0
Negative Mark
🌐
English
Language
Start Test Now (English Medium)
Instant Scorecard Step-by-Step Solutions WBCHSE HS Syllabus Pattern

Chapter Study Guide & In-Depth Notes

Master the key concepts, vocabulary, and high-yield questions before starting the test.

3 Sections

Chapter Overview & Core Concepts: Human Reproduction

Class 12 Study Guide

Mastering Human Reproduction in Class 12 provides critical subject intuition, analytical skills, and examination readiness.

Examinations test fundamental principles, definitions, cause-and-effect reasoning, and real-world applications under timed conditions.

Core Moral & Key Takeaway:

Grasping core concepts and practicing with timed chapter-wise CBT tests guarantees top performance in board exams.

Key Terminology, Definitions & Principles

Glossary & Concepts
Term / Formula Type Definition / Meaning Explanation / Notes Example / Usage
Core Concept Principle Primary concept governing Human Reproduction. मुख्य सिद्धांत "Understand and apply the principle accurately."
Analytical Deduction Skill Evaluating evidence to draw correct conclusions. तार्किक विश्लेषण "Examine question clues systematically."

Key Features & Devices Explored:

Systematic Elimination
Eliminate distractor choices before selecting the best answer.
Pacing & Accuracy
Complete each question within 60 seconds to maintain steady momentum.

High-Yield Revision Points & Solved Board Exam Q&A

Revision Notes
⚡ High-Yield Exam Takeaways:
  • Review all key textbook terms, definitions, and formulas.
  • Pay attention to units, boundary values, and key keywords in questions.
  • Solve Foundation Set 01 to build confidence, followed by Advanced Set 02 for exam excellence.
Frequently Asked Questions & Model Answers:
Q1 How should students prepare for Human Reproduction exams?
Answer: Read the chapter thoroughly, practice step-by-step solved examples, memorize key definitions, and evaluate preparation using timed online CBT mock tests.

Sample Questions Preview

Free Sneak Peek

Here is a sneak peek of the questions included in this test set. Test your preparation by viewing the answer and detailed explanation before starting the timed exam.

Q1
At what stage of Meiosis is the primary oocyte arrested from fetal life until puberty, and at what stage is the secondary oocyte arrested until fertilization?
মানব ডিম্বাণু জননে প্রাইমারি ওওসাইট ও সেকেন্ডারি ওওসাইট মিয়োসিসের কোন কোন দশায় যথাক্রমে স্থগিত (Arrested) থাকে?
अर्धसूत्रीविभाजन के किस चरण में प्राथमिक अंडाणु को भ्रूण के जीवन से यौवन तक रोका जाता है, और द्वितीयक अंडाणु को निषेचन तक किस चरण में रोका जाता है?
A
Both arrested in Anaphase Iউভয়েই অ্যানাফেজ I-এदोनों को एनाफेज प्रथम में गिरफ्तार किया गया
B
Primary in Metaphase I, Secondary in Telophase IIমেটাফেজ I ও টেলোফেজ IIमेटाफ़ेज़ I में प्राथमिक, टेलोफ़ेज़ II में माध्यमिक
C
No arrest occurs in oogenesisকোনো স্থগিতাবস্থা থাকে নাअंडजनन में कोई गिरफ्तारी नहीं होती है
D
Primary oocyte arrested in PROPHASE I (Diplotene) until puberty; Secondary oocyte arrested in METAPHASE II until entry of spermপ্রাইমারি ওওসাইট বয়ঃসন্ধি পর্যন্ত প্রফেজ I (ডিপ্লোটিন)-এ এবং সেকেন্ডারি ওওসাইট নিষেক পর্যন্ত মেটাফেজ II-এ স্থগিত থাকেप्राथमिक अंडाणु को प्रोफ़ेज़ I (डिप्लोटीन) में युवावस्था तक गिरफ्तार किया गया; शुक्राणु के प्रवेश तक द्वितीयक अंडाणु मेटाफ़ेज़ II में रुका हुआ है
Correct Answer: Option D
Explanation:
Primary oocytes remain suspended in Diplotene of Prophase I from fetal life. At ovulation, the secondary oocyte completes meiosis I and arrests at Metaphase II, resuming only when sperm entry induces Meiosis II completion.
শুক্রাণুর প্রবেশের পরই কেবল সেকেন্ডারি ওওসাইট তার মেটাফেজ II বিভাজন সম্পূর্ণ করে প্রকৃত ডিম্বাণু গঠন করে।
प्राथमिक अंडाणु भ्रूण के जीवन से प्रोफ़ेज़ I के डिप्लोटीन में निलंबित रहते हैं। ओव्यूलेशन के समय, द्वितीयक अंडाणु अर्धसूत्रीविभाजन I को पूरा करता है और मेटाफ़ेज़ II पर रुक जाता है, केवल तब फिर से शुरू होता है जब शुक्राणु प्रवेश अर्धसूत्रीविभाजन II को पूरा करने के लिए प्रेरित करता है।
Q2
What is the Cortical Reaction and Zona Reaction preventing Polyspermy upon sperm entry into the egg?
ডিম্বাণুতে শুক্রাণুর প্রবেশের পর পলিস্পার্মি বা বহু-শুক্রাণু প্রবেশ রোধে কর্টিক্যাল ও জোনা বিক্রিয়ার ভূমিকা কী?
अंडे में शुक्राणु के प्रवेश पर पॉलीस्पर्मी को रोकने वाला कॉर्टिकल रिएक्शन और ज़ोना रिएक्शन क्या है?
A
Egg shrinks to zero sizeডিম্বাণু সংকুচিত হয়अंडा सिकुड़कर शून्य आकार का हो जाता है
B
Calcium wave triggers cortical granules to exocytose enzymes that HARDEN THE ZONA PELLUCIDA and destroy sperm receptors, establishing a permanent block to polyspermyক্যালসিয়াম তরঙ্গের প্রভাবে কর্টিক্যাল দানা উৎসেচক ক্ষরণ করে জোনা পেলুসিডাকে শক্ত করে তোলে এবং শুক্রাণু গ্রাহক ধ্বংস করে অতিরিক্ত শুক্রাণু প্রবেশ আটকায়कैल्शियम तरंग कॉर्टिकल ग्रैन्यूल को एक्सोसाइटोज़ एंजाइमों में ट्रिगर करती है जो ज़ोना पेलुसीडा को कठोर करती है और शुक्राणु रिसेप्टर्स को नष्ट कर देती है, जिससे पॉलीस्पर्मी में एक स्थायी ब्लॉक स्थापित हो जाता है।
C
Sperm destroys the egg membraneশুক্রাণু ঝিল্লি নষ্ট করেशुक्राणु अंडे की झिल्ली को नष्ट कर देता है
D
Dissolves the nucleusনিউক্লিয়াস গলে যায়केन्द्रक को विघटित करता है
Correct Answer: Option B
Explanation:
Entry of one sperm triggers intracellular Ca^2⁺ release, prompting cortical granule exocytosis. These enzymes alter zona pellucida glycoproteins (ZP3 modification) to permanently block polyspermy.
একটি শুক্রাণু প্রবেশের সাথে সাথেই জোনা পেলুসিডা শক্ত হয়ে যায় যাতে আর কোনো দ্বিতীয় শুক্রাণু প্রবেশ করতে না পারে।
एक शुक्राणु के प्रवेश से इंट्रासेल्युलर Ca^2⁺ रिलीज शुरू हो जाता है, जिससे कॉर्टिकल ग्रेन्युल एक्सोसाइटोसिस शुरू हो जाता है। ये एंजाइम पॉलीस्पर्मी को स्थायी रूप से अवरुद्ध करने के लिए ज़ोना पेलुसीडा ग्लाइकोप्रोटीन (ZP3 संशोधन) को बदल देते हैं।

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How Chapter-Wise Online CBT Tests Build Winning Habits for Future Competitive Exams

Focused chapter-wise CBT practice builds the speed, mental stamina, and analytical discipline required to ace CUET, JEE Main, NEET UG, NDA, CA Foundation, and College Entrance Exams.

Competitive Edge

Real-Time Clock Awareness & Pacing

समय प्रबंधन एवं गति नियंत्रण

In school examinations, students write answers without active pacing. In national entrance tests, students have barely 45-60 seconds per MCQ. Practicing with a 20-minute timer instills instinctive time-budgeting and prevents last-minute exam panic.

Mastery of the Elimination Technique

विकल्प निष्कासन विधि में दक्षता

Top rankers in competitive exams rarely compute every problem blindly. They spot subtle traps, evaluate extreme values, and eliminate 2 out of 4 distractors within seconds. Our 4-option sets teach critical distractor analysis.

CBT Screen Stamina & Digital Comfort

कंप्यूटर आधारित परीक्षा का सहज अभ्यास

Almost all major national exams (CUET, JEE, NEET, SSC, Banking) are 100% computer-based. Students who only study on paper experience eye strain and navigation mistakes on exam day. Early CBT practice creates effortless digital fluency.

Immunity to Negative Marking

सटीकता और नकारात्मक अंकन से सुरक्षा

Careless errors—such as misreading "NOT" or "EXCEPT"—ruin thousands of competitive aspirations each year. Regular objective testing builds the habit of double-checking question keywords before locking answers.

Instant Diagnostic Feedback Loop

तत्काल त्रुटि निवारण एवं आत्म-मूल्यांकन

Traditional paper tests take weeks to grade, by which time the student has forgotten their thought process. TargetExams provides instant scorecards and step-by-step solutions while the conceptual puzzle is still fresh.

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Develop speed, accuracy, and digital test-taking confidence with chapter-wise 20-minute mocks.

Syllabus Concepts Evaluated in this Chapter

This test series specifically evaluates the core competencies and learning objectives outlined in the official syllabus:

  • Core definitions, fundamental theorems, and essential concepts of this chapter.
  • Step-by-step mathematical reasoning and deductive problem-solving.
  • Application of standard formulas and operations in real-world scenarios.
  • Critical examination of common exam pitfalls and misleading options.
  • Higher-order thinking skill (HOTS) questions to prepare for school examinations.
  • Speed and accuracy mastery under standard timed CBT exam conditions.

Exam Rules & Test Taking Guidelines

  • Total Questions: The test consists of exactly 20 objective type questions.
  • Time Allowed: 20 Minutes countdown timer begins as soon as the test launches.
  • Marking Scheme: +1.0 mark is awarded for each correct answer.
  • Zero Penalty: There is 0.0 negative marking for incorrect or unattempted questions.
  • Question Palette: Freely navigate between questions and flag questions for later review.
  • Review & Solutions: Access instant scorecard and full step-by-step solutions upon submission.

Frequently Asked Questions (FAQs)

Yes! Foundation Practice Set 01 for every chapter in West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Biology is 100% free to attempt. Students can test their preparation without any subscription or payment.
This test strictly follows the official West Bengal Council of Higher Secondary Education (WBCHSE) syllabus and curriculum for Class 12 (Higher Secondary), covering textbook concepts, formulas, and board-standard MCQs for Chapter 2.
This dedicated test page is conducted in English Medium. If you prefer taking the test in Bengali or Hindi, you can switch using the language switcher bar at the top or toggle languages during the exam.
The test comprises 20 MCQs to be completed in 20 minutes. Each question carries +1.0 mark for a correct response, and there is 0.0 negative marking for incorrect or unattempted questions.
Yes! Instantly after submitting your test, you receive a comprehensive digital scorecard with accuracy analysis, time breakdown, and step-by-step verified explanations for all 20 questions.

Practice Sets in this Chapter

Set 01 (Foundation)

20 MCQs • 20 Mins
View

Set 02 (Advanced)

20 MCQs • 20 Mins
Current

More Chapters in this Subject

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Human Reproduction (Set 02 (Advanced Level))
20 MCQs • 20 Mins • 100% Free Practice Test

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