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जीव-विज्ञान, क्रॉनिकल आईएएस अकादमी द्वारा : सभी प्रतियोगी परीक्षा हेतु परीक्षा हेतु पीडीऍफ़ बुक | Biology by Chronicle IAS Academy : For All Competitive Exam PDF Book

जीव-विज्ञान, क्रॉनिकल आईएएस अकादमी द्वारा : सभी प्रतियोगी परीक्षा हेतु परीक्षा हेतु पीडीऍफ़ बुक | Biology by Chronicle IAS Academy : For All Competitive Exam PDF Book


Biology-by-Chronicle-IAS-Academy-For-All-Competitive-Exam-PDF-Book


Name of Book :  Biology / जीव-विज्ञान 

Hope This Biology Book will Step up you to Succeed / आशा करते हैं जीव-विज्ञान पुस्तक आपके कदम सफलता की ओर ले जायगी

Language of Book : English

Size of Ebook : 5.88 MB

Total pages in ebook : 120

Ebook Downloading Status  : Best 
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Description about eBook : INTRODUCTION
The cell is the structural and functional unit of all living organisms, and is sometimes called the “building block of life.” Some organisms, such as bacteria are unicellular, consisting of a single cell. Other organisms such as humans are multi-cellular. Humans have an estimated 100 trillion or 1014 cells. The largest known cell is an Ostrich egg.
  • Anton van Leeuwenhoek was the first person to build a microscope and draw protozoa, such as Vorticella from rain water, and bacteria from his own mouth.
  • In 1665 Robert Hooke discovered cells in cork, then in living plant tissue using an early microscope.
  • First of all in 1839 Schleiden and Schwann, states that all organisms are composed of one or more cells. All cells come from preexisting cells. Vital functions of an organism occur within cells, and all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells............

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