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Animal Kingdom

CBSE · Class 11 · Biology

Quick revision notes for Animal Kingdom — CBSE Class 11 Biology. Key concepts, formulas, and definitions for last-minute revision.

157 questions80 flashcards5 concepts

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Key Topics to Revise

1

Basis of Classification

  • Levels of organisation help group animals into cellular, tissue, organ, and organ system levels.
  • Sponges show cellular level of organisation.
  • Coelenterates show tissue level of organisation.
2

Major Non-Chordate Phyla

  • Porifera are sponges and are generally marine, mostly asymmetrical, and primitive multicellular animals.
  • Porifera show cellular level of organisation.
  • Water enters sponges through ostia, goes into the spongocoel, and leaves through the osculum.
3

Chordata and Vertebrata

  • Chordates are characterised by notochord, dorsal hollow nerve cord, paired pharyngeal gill slits, post-anal tail, and closed circulatory system.
  • Chordata is divided into Urochordata, Cephalochordata, and Vertebrata.
  • Urochordata and Cephalochordata are called protochordates and are exclusively marine.

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Full Notes

Key Concepts

Sponges show cellular level of organisationSponges are mostly asymmetricalDiploblastic animals have ectoderm and endodermCoelom is a body cavity linedSponges are generally marine

Frequently Asked Questions

What are the important topics in Animal Kingdom for CBSE Class 11 Biology?
Animal Kingdom covers several key topics that are frequently asked in CBSE 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 Animal Kingdom — CBSE Class 11 Biology?
Understand the core concepts first, then work through the 157 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall 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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