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9th Class Biology Biology

Biology 9th Model Paper Half Book For Students Practice

  Biology 9th                                                                   Objective Type Time Allowed:  15 minutes                                      Marks:  12 Note: You have four choices for each objective type question as A/B/C/ and D. The choice which you think is correct; fill that circle in front of that question number. Cutting or filling two or more circles will result in zero mark in that […]

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Biology 9th Class Biology

Important Definitions – 9th Class Biology

Important – Definitions   Chapter #1st     INTRODUCTION TO BIOLOGY   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: […]

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Biology 9th Class Biology

Chapter 9 Transport – 9th Class Biology Notes

Chapter 9 Transport – 9th Class Biology Free And Easy Notes Question#1): What is the primary function of transport system? Answer:The primary function of transport system is to maintain a link between all cells of the body and the external environment. It transports the nutrients and water to the points where they are to be […]

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Biology 9th Class Biology

Chapter 8 Nutrition – 9th Class Biology Notes

Chapter 8 Nutrition – 9th Class Biology Notes Question#1) Define the following terms? I) Nutrition. II) Nutrients. III) Autotrophs.  IV) Heterotrophs. Answer: I) Nutrition: The process in which food is obtained or prepared, absorbed and converted into body substances for growth and energy, is called nutrition. II) Nutrients: Nutrients are the elements and compounds that […]

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Biology 9th Class Biology

Chapter 7 Bioenergetics – 9th Class Biology Notes

Chapter 7 Bioenergetics – 9th Class Biology Free and Easy Notes Question#1) How energy is produced in the body of living organisms? Answer: Energy is produced in the body of living organisms by the breakdown of food. During oxidation reduction reactions the chemical bond in substances break down and energy is produced.

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Biology 9th Class Biology

Chapter 6 Enzymes 9th Class Biology Notes

Enzymes 9th Class  Biology Notes Question#1) Write a short note on enzyme? Answer: Enzyme: Enzymes are proteins that catalyze (speed up) biochemical reactions by lowering its activation energy and are not changed during the reaction. All enzymes are catalysts but all catalysts are not enzymes. Only biocatalysts are called enzymes. Word enzyme was first used […]

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Biology 9th Class Biology

Chapter 5 Cell Cycle – 9th Class Biology Notes

Chapter 5 Cell Cycle – 9th Class Biology Notes Interesting information about this chapter and introduction;- All organisms consists of cells. An adult human being has approximately 1, 00,000 billion cells, all originate from a single cell, the fertilized egg cell or zygote. Cells arise from free existing cells as a result of cell division […]

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Biology 9th Class Biology

Chapter 4 Cells and Tissues – 9th Class Biology Notes

Chapter # 4        CELLS AND TISSUES   Question#1) Define Microscopy? What are different types of Microscope? Answer:- Microscope; An optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times. Microscopy:- Microscopy is the use of microscope to observe minute living […]

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Biology 9th Class Biology

Chapter 3 Biodiversity 9th Class Biology Notes

Biodiversity 9th Class Biodiversity 9th Class Notes Chapter  Number 3 Complete Notes 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 […]

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Biology 9th Class Biology

Chapter 2 Solving a Biological Problem – 9th Class Biology

Solving A Biological Problem   Question#1) Define science and Scientific method? Answer; Science: word science is derived from scientia means knowledge. Science is the systematized knowledge derived from observations and experiments. “OR” The knowledge that gives understanding about this world and how it works is called science.

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Biology 9th Class Biology

Chapter 1 Introduction to Biology – 9th Class Biology Notes

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. […]