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Biological Classification

Gujarat Board · Class 11 · Biology

Complete topic list for Biological Classification in Gujarat Board Class 11 Biology. Key concepts, sub-topics, and what to focus on for board exams.

154 questions22 flashcards5 concepts

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4 Topics · Gujarat Board Class 11 Biology

Topics in Biological Classification

1

Evolution of Classification Systems

  • Aristotle was the first to attempt scientific classification - divided plants into trees, shrubs, and herbs; animals into those with red blood and without red blood
  • Linnaeus developed the Two Kingdom system - Plantae and Animalia
  • Two Kingdom system limitations: didn't distinguish between prokaryotes and eukaryotes, unicellular and multicellular organisms, photosynthetic and non-photosynthetic organisms
2

Whittaker's Five Kingdom Classification

  • Proposed by R.H. Whittaker in 1969
  • Five Kingdoms: Monera, Protista, Fungi, Plantae, Animalia
  • Main criteria: cell structure, body organization, mode of nutrition, reproduction, and phylogenetic relationships
3

Kingdom Monera

  • Sole members are bacteria - most abundant microorganisms
  • Found everywhere: soil, extreme habitats (hot springs, deserts, deep oceans)
  • Four shapes: Coccus (spherical), Bacillus (rod-shaped), Vibrio (comma-shaped), Spirillum (spiral)
4

Kingdom Protista

  • All single-celled eukaryotes with well-defined nucleus and organelles
  • Primarily aquatic, forms link between plants, animals, and fungi
  • Includes: Chrysophytes, Dinoflagellates, Euglenoids, Slime moulds, Protozoans

Key Concepts

Contains all prokaryotic organisms (bacteriaIncludes all singleHeterotrophic eukaryotic organisms with chitin cellLinnaeus proposed a Two Kingdom systemViruses are non

Frequently Asked Questions

What are the important topics in Biological Classification for Gujarat Board Class 11 Biology?
Biological Classification covers several key topics that are frequently asked in Gujarat Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Biological Classification — Gujarat Board Class 11 Biology?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All 19 chapters — Gujarat Board Class 11 Biology Syllabus

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