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ICSE Class 7 Biology Question 10 of 17

Classification of Animals — Question 15

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Question

Question 6

Identify the phylum/ class with the help of the following clues and give one example of each.

  1. Body is covered by a slimy and slippery skin.
  2. Body bears many tiny pores.
  3. Body has jointed legs.
  4. Animals swim with the help of fins.
  5. Body has special excretory organs called nephridia.
Answer

  1. Amphibia
    Example — Frogs

  2. Porifera
    Example — Sponge

  3. Arthropoda
    Example — Crabs

  4. Pisces
    Example — Rohu

  5. Annelida
    Example — Earthworms

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.