Skip to main content
Super TutorResources
Chapter 3 of 11
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Syllabus

Biodiversity

ICSE · Class 9 · Environmental Science

Complete topic list for Biodiversity in ICSE Class 9 Environmental Science. Key concepts, sub-topics, and what to focus on for board exams.

57 questions40 flashcards5 concepts

Interactive on Super Tutor

Studying Biodiversity? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for syllabus and more.

Try Super Tutor — Free

1,000+ Class 9 students started this chapter today

4 Topics · ICSE Class 9 Environmental Science

Topics in Biodiversity

1

1. Meaning and Types of Biodiversity

  • Biodiversity includes genetic differences within species, diversity of species, and variety of ecosystems.
  • The term biodiversity is derived from biological diversity.
  • There are three main types of biodiversity: genetic diversity, species diversity, and ecosystem diversity.
2

2. Genetic Diversity and Conservation

  • Genetic diversity arises due to mutations, gene flow, genetic drift, and sexual reproduction.
  • Traditional rice varieties show better resistance to floods or pests than genetically uniform, high-yield varieties.
  • High genetic diversity helps populations adapt and survive environmental changes.
3

3. Species Diversity and Its Measurement

  • Species diversity means the variety, number, and relative abundance of species in an ecosystem.
  • Species richness is the total number of different species in an area.
  • Species evenness is the distribution of individuals among different species.
4

4. Indicator Species, Keystone Species, and Ecosystem Health

  • Indicator species act as early warning signs of environmental changes.
  • Frogs indicate water quality and lichens indicate air quality.
  • Removal of indicator species may show environmental problems but may not immediately disturb the ecosystem.

Key Concepts

Central concept: Biodiversity

Meaning of BiodiversityTypes of BiodiversityGenetic DiversitySpecies DiversityEcosystem DiversityThreats to BiodiversityConservation of BiodiversityIndicator Species and Keystone Species

Frequently Asked Questions

What are the important topics in Biodiversity for ICSE Class 9 Environmental Science?
Biodiversity covers several key topics that are frequently asked in ICSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Biodiversity — ICSE Class 9 Environmental Science?
Understand the core concepts first, then work through the 57 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.

More resources for Biodiversity

All 11 chapters — ICSE Class 9 Environmental Science Syllabus

For serious students

Get the full Biodiversity chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 9 Environmental Science.

Try Super Tutor Free
Try the full chapter — Free