Class 9 Biology Notes Questions & Worksheet|Entrancei
Biology (Gk. Bios- life and logos-to discourse) is the branch of science which deals with the scientific study of life. It is dependent upon other sciences (such as physical and chemical) and thus, has become a multidisciplinary and multidimensional branch of science. Class 9 Biology is better known as ‘life science’, as it seeks to understand the way living beings interact with other ‘living’ and ‘non-living’ things.
Precisely, biology is a quest, an ongoing enquiry about the nature of life. Biology, being a major branch of science, requires a scientific approach for understanding and obtaining precise results.
• The term ‘biology’ was coined by Lamarck and Treviranus in 1802.
• Aristotle is known as ‘father of biology as well as zoology’.
• Theophrastus is known as ‘father of botany’.
• Micro organisms were first observed by A.V. Leeuwenhoek but Louis Pasteur is considered as father of Microbiology.
• Emil von Behring (Germany) was the first Nobel Laureate in physiology and medicine who got this award in 1901 for serum therapy against “Diphtheria”
Chapters cover in Class 9 Biology
Chapter 1 - The fundamental unity of life
This chapter will help you learn about the cell as the basic unit of life. Biology experts will give you step-by-step answers to explain concepts such as eukaryotic cells, prokaryotic cells, chloroplast, Golgi apparatus, chromosomes, nuclei, and more.
Chapter 2 - Fabrics
Get answers about plant and animal tissue Chapter 2, Tissues. Learn about permanent and meristematic tissues. Understand the structure of tissues and write accurate answers to questions related to this concept.
Chapter 3 - Diversity in living organisms
This chapter explores concepts of biological diversity, such as plant groups and animal groups. Find NCERT expert solutions with explanations about angiosperms, bacteria, bryophytes, chordates, un-chordates and more.
Chapter 4 - Why are we sick?
Find out what it means to be healthy and unhealthy. Get complete answers about what causes the disease and how you can lead a healthy lifestyle. In this chapter, read about diseases, the causes of diseases and which diseases are infectious.
Chapter 5 - Natural Resources
Understand the importance of resources such as air, water, and soil. Write answers about geochemical cycles in nature. This chapter also discusses types of pollution and pollution control methods to prevent possible damage.
Chapter 6 - Improvements in food resources
Explore concepts such as animal husbandry, fertilizer use, and ways to protect crops from pests. Find answers to questions on crop improvement, crop protection, crop production, etc. Also, learn the basic concepts and importance of organic farming in this chapter on biology.
Why Entrancei for CBSE class 9 Biology
Academic team of entrancei consist of highly experienced team of teacher who prepared a dedicated academic recourse for class 9 Biology. Our team understand the requirements of resource for class 9 Biology and its use. You can get detail class 9 Biology Notes chapter wise with addition of solved and unsolved examples .Each chapter of class 9 Biology Notes consist of one to 5 exercise having Objective types questions which enhanced your learning of the chapters. NCERT solutions for class 9 Will help you excel in the exam prepared by our academic team. At the same page you will get chapter wise online quiz for class 9 Biology. The pattern of online quiz is similar to the exam conducting body. Apart for these resources you can check out Important questions for class 9 Biology and different segment for formulas for class 9 Biology.
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