সতর্কীকরণ (Disclaimer)এই লেখা শুধুমাত্র শিক্ষামূলক উদ্দেশ্যে রচিত। পরীক্ষার প্রস্তুতির জন্য অবশ্যই NCERT বই অনুসরণ করুন।🌿 हिंदी संस्करणपरिचयNCERT कक्षा 11 जीवविज्ञान का महत्वपूर्ण अध्याय है Biological Classification (जैव वर्गीकरण)।यह अध्याय जीवों को पाँच राज्यों में बाँटता है।यह प्रणाली R. H. Whittaker द्वारा 1969 में दी गईKeywordsNCERT Biological Classification, Five Kingdom Classification, Monera, Protista, Fungi, Plantae, Animalia, CBSE Biology Notes, Class 11 Biology Chapter 2, Biological Taxonomy, Competitive Exam Preparation, NEET Biology🔖 Hashtags#NCERTBiology #BiologicalClassification #Class11Biology #NEETPreparation #CBSE #FiveKingdom #BiologyNotes #StudentGuide #ScienceEducation🌿 ENGLISH VERSION

📘 NCERT – Biological Classification
(Complete Blog in English, Bengali, and Hindi | With Disclaimer, Keywords, Hashtags & Meta Description)
🔎 Meta Description
A detailed and student-friendly blog on NCERT Biological Classification covering the five-kingdom system, characteristics of Monera, Protista, Fungi, Plantae, and Animalia, along with diagrams, exam tips, and multilingual explanations in English, Bengali, and Hindi.
🏷️ Keywords
NCERT Biological Classification, Five Kingdom Classification, Monera, Protista, Fungi, Plantae, Animalia, CBSE Biology Notes, Class 11 Biology Chapter 2, Biological Taxonomy, Competitive Exam Preparation, NEET Biology
🔖 Hashtags
#NCERTBiology #BiologicalClassification #Class11Biology #NEETPreparation #CBSE #FiveKingdom #BiologyNotes #StudentGuide #ScienceEducation
🌿 ENGLISH VERSION
📖 Introduction
In the NCERT Class 11 Biology syllabus, one of the most foundational and important chapters is Biological Classification. This chapter explains how scientists classify living organisms into different groups based on similarities and differences.
Classification helps us:
Understand diversity
Study organisms systematically
Identify relationships among species
Predict characteristics
The concept evolved over time, and one of the most accepted systems is the Five Kingdom Classification proposed by R. H. Whittaker in 1969.
🌎 What is Biological Classification?
Biological classification is the scientific arrangement of organisms into groups based on shared characteristics.
Earlier systems included:
Two-kingdom classification (Plants & Animals)
Three-kingdom system
Four-kingdom system
Five-kingdom system
Today, modern biology also recognizes the Three-Domain System proposed by Carl Woese.
🧫 The Five Kingdom Classification
Monera
Protista
Fungi
Plantae
Animalia
🦠 1. Monera
Key Characteristics:
Prokaryotic cells
No true nucleus
Unicellular
Cell wall usually present
Examples:
Bacteria
Cyanobacteria
Archaebacteria
Monerans reproduce mainly by binary fission.
🧪 2. Protista
Key Characteristics:
Eukaryotic
Mostly unicellular
Aquatic
Some photosynthetic
Examples:
Amoeba
Paramecium
Euglena
They show varied nutrition modes: autotrophic, heterotrophic, or mixotrophic.
🍄 3. Fungi
Key Characteristics:
Eukaryotic
Cell wall made of chitin
Heterotrophic
Reproduce by spores
Examples:
Mushroom
Yeast
Molds
Fungi play a major role in decomposition.
🌳 4. Plantae
Key Characteristics:
Multicellular
Autotrophic
Chlorophyll present
Cell wall of cellulose
Plants are further divided into:
Algae
Bryophytes
Pteridophytes
Gymnosperms
Angiosperms
🐾 5. Animalia
Key Characteristics:
Multicellular
Heterotrophic
No cell wall
Complex organ systems
Animals are classified into:
Invertebrates
Vertebrates
🔬 Three Domain System
The modern system divides life into:
Bacteria
Archaea
Eukarya
This system is based on genetic analysis.
📚 Importance for Exams
Biological Classification is important for:
CBSE Board Exams
NEET
Competitive exams
Students must focus on:
✔ Differences between kingdoms
✔ Examples
✔ Diagrams
✔ Definitions
⚠️ Disclaimer
This blog is written for educational and informational purposes only, based on NCERT Biology curriculum. Students are advised to refer to the official NCERT textbook and consult teachers for accurate academic preparation. The author does not claim to replace official educational material.
🌿 বাংলা সংস্করণ
ভূমিকা
NCERT-এর একাদশ শ্রেণির জীববিজ্ঞানের একটি গুরুত্বপূর্ণ অধ্যায় হলো Biological Classification (জৈব শ্রেণীবিভাগ)।
এই অধ্যায়ে জীবজগতকে পাঁচটি রাজ্যে ভাগ করা হয়েছে।
পাঁচ রাজ্য:
মোনেরা
প্রোটিস্টা
ফাঞ্জাই
প্ল্যান্টি
অ্যানিমেলিয়া
এই শ্রেণীবিভাগ প্রস্তাব করেন R. H. Whittaker।
মোনেরা
প্রোক্যারিওটিক জীব, এককোষী, নিউক্লিয়াস নেই।
উদাহরণ: ব্যাকটেরিয়া।
প্রোটিস্টা
ইউক্যারিওটিক, অধিকাংশ এককোষী।
উদাহরণ: অ্যামিবা।
ফাঞ্জাই
চিটিনযুক্ত কোষপ্রাচীর, স্পোরের মাধ্যমে বংশবিস্তার।
প্ল্যান্টি
সবুজ উদ্ভিদ, আলোকসংশ্লেষণ করে।
অ্যানিমেলিয়া
বহুকোষী, জটিল অঙ্গতন্ত্র রয়েছে।
সতর্কীকরণ (Disclaimer)
এই লেখা শুধুমাত্র শিক্ষামূলক উদ্দেশ্যে রচিত। পরীক্ষার প্রস্তুতির জন্য অবশ্যই NCERT বই অনুসরণ করুন।
🌿 हिंदी संस्करण
परिचय
NCERT कक्षा 11 जीवविज्ञान का महत्वपूर्ण अध्याय है Biological Classification (जैव वर्गीकरण)।0
यह अध्याय जीवों को पाँच राज्यों में बाँटता है।
यह प्रणाली R. H. Whittaker द्वारा 1969 में दी गई थी।
पाँच राज्य
मोनेरा
प्रोटिस्टा
फंगी
प्लांटी
एनिमेलिया
महत्व
✔ बोर्ड परीक्षा
✔ NEET
✔ प्रतियोगी परीक्षाएँ
अस्वीकरण (Disclaimer)
यह ब्लॉग केवल शैक्षणिक उद्देश्य से लिखा गया है। आधिकारिक तैयारी के लिए NCERT की मूल पुस्तक का अध्ययन आवश्यक है।
🌿 Final Words
Biological Classification forms the base of understanding life sciences. Mastering this chapter builds strong foundations for higher biology studies.
Written with AI 

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