Two characteristic features of birds which enable them to fly are:
- Their bones are hollow and light which make their body light.
- They have wings to fly.
Two birds which cannot fly are Ostrich and Kiwi.
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.