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ICSE Class 7 Biology Question 11 of 17

Classification of Animals — Question 16

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Question

Question 7

Given below are sets of four terms. Choose the odd one and write the category of the remaining terms :

  1. Jellyfish, Dogfish, Sea anemone, Hydra
  2. Electric ray fish, Dogfish, Starfish, Shark
  3. Myriapoda, Mammalia, Arachnida, Crustacea
  4. Turtle, Tortoises, Crocodiles, Frog
  5. Sucker, Tube feet, Muscular foot, Fins
Answer

  1. Odd one — Dogfish
    Category of the remaining terms — Coelenterata

  2. Odd one — Starfish
    Category of the remaining terms — Pisces

  3. Odd one — Mammalia
    Category of the remaining terms — Arthropoda

  4. Odd one — Frog
    Category of the remaining terms — Reptiles

  5. Odd one — Fins
    Category of the remaining terms — Locomotory structures in invertebrates

Chapter 2: Classification of Animals — ICSE Class VII Biology Notes

Comprehensive ICSE Class VII Biology notes on Classification of Animals covering invertebrate phyla (Porifera to Echinodermata), vertebrate classes (Pisces to Mammalia), and Whittaker Five Kingdom Classification with solved examples.

Key Concepts and Topics

Topics covered: Invertebrates, Vertebrates, Five Kingdom Classification, Phyla, Classes

Weightage: Approximately 8 marks in the exam

Important Points to Remember

  • 97% of animals are invertebrates without backbone
  • Eight invertebrate phyla from Porifera to Echinodermata
  • Arthropoda is the largest phylum with jointed legs and exoskeleton
  • Five vertebrate classes: Pisces, Amphibia, Reptilia, Aves, Mammalia
  • Cold-blooded vs warm-blooded animals
  • Whittaker Five Kingdom Classification: Monera, Protista, Fungi, Plantae, Animalia
  • Key exceptions: whale is mammal, bat is mammal, penguin is bird

Frequently Asked Questions

Q: What is the largest phylum of animals?

A: Arthropoda, which includes insects, spiders, and crabs.

Q: Why is a whale a mammal and not a fish?

A: Whales breathe through lungs, give birth to live young, and feed milk to their babies.

Q: What are the five kingdoms in Whittaker classification?

A: Monera, Protista, Fungi, Plantae, and Animalia.

Exam Preparation Tips

  • Focus on understanding concepts rather than rote memorization
  • Practice drawing and labelling diagrams regularly
  • Use comparison tables for topics that require differentiation
  • Solve previous year questions and practice papers
  • Review the chapter notes provided by Bright Tutorials for comprehensive coverage

For complete chapter notes, practice questions, and test papers, contact Bright Tutorials at 9403781999.