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Animal Kingdom — Revision Notes

CBSE · Class 11 · Biology

Animal Kingdom revision notes for CBSE Class 11 Biology: 3 topics in quick points. Part of the CBSE Class 11 Biology syllabus.

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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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?
Key topics in Animal Kingdom include Basis of Classification, Major Non-Chordate Phyla, Chordata and Vertebrata. Study these first, then practise questions on each for Class 11 exams.
How should I revise Animal Kingdom for Class 11 exams?
Learn the core ideas first, then work through the 157 practice questions on Animal Kingdom. Revise 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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All CBSE Class 11 Biology Revision Notes

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