Class 9 Biology Notes

Class 9 Biology Notes – Chapter Number 3  BIODIVERSITY   Question#1) Define Biodiversity? Answer: Biodiversity: The term “biodiversity” has been derived from ‘bio’ and ‘diversity’.  Biodiversity is a measure of the variety of organisms present in different ecosystems or earth surface. Flora: Diversity of plants in an ecosystem is called flora. Fauna: Diversity of animals in an ecosystem is …

Class 9 Biology Notes – Chapter Number 3  BIODIVERSITY Read More »

Chapter Number 2  – SOLVING A BIOLOGICAL PROBLEM   Question#1) Define science and Scientific method?   Answer; Science: word science is derived from scientia means knowledge. Science is the systemized knowledge derived from observations and experiments. “OR” The knowledge that gives understanding about this world and how it works is called science. “OR” The systemized knowledge …

Class 9 Biology Notes Chapter 2 – Solving a Biological Problem Read More »

INTRODUCTION TO BIOLOGY   Question#1) Define Science and Biology? Answer: Science: Word science is derived from scientia means knowledge. Science is the study in which observations are made, experiments are done and logical conclusions are drawn in order to understand the principles of nature. “OR”  The knowledge obtained through observations and experiments is called science. Biology: The word “biology” …

Class 9 Biology Chapter 1 Notes – Introduction to Biology Read More »