FREE Download: Essential Biology PDF Download

Last updated on June 22nd, 2024 at 02:29 pm

In this blog post, we have compiled two different categories of essential biology textbook pdf for you, one is free and the other is paid. We understand some students are on a tight budget, so we at Pdfmadeazy are not only interested in your patronage, but also your excellence. 

Book 1: Complete Biology for Cambridge IGSCE

Author: Authors: W.R. Pickering

Description: “Essential Biology for IGCSE” is a textbook designed specifically for students studying the International General Certificate of Secondary Education (IGCSE) biology curriculum. It covers all the essential topics required for the IGCSE exams, providing clear explanations, diagrams, and practice questions to help students understand and apply biological concepts.

Published Year: The book was published in 2009.

Size: The physical dimensions of the book are 276 x 219 x 11 mm.

ISBN: The ISBN-13 for the book is 9780199152666 and the ISBN-10 is 0199152667.

Number of Pages: The book contains 208 pages.

Users: The primary users of this book are students preparing for the IGCSE biology exam, as well as teachers who use it as a reference and teaching resource.

SIZE: 75.5MB
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Book 2: Essential Biology for Cambridge IGCSE® 2nd Edition

Author: Author: Gareth Williams, Richard Fosbery

Description: “Complete Biology for SSCE” is a comprehensive textbook aimed at students preparing for the Senior Secondary Certificate Examination (SSCE) in biology. The third edition includes updated content aligned with the latest curriculum requirements, offering thorough explanations, illustrations, and exam-style questions to aid students in their studies and exam preparation.

Published Year: The third edition of the book was published in 2017.Size: The physical dimensions of the book are 276 x 219 x 15 mm.

ISBN: The ISBN-13 for the book is 9780198375844 and the ISBN-10 is 0198375845.

Number of Pages: The book contains 336 pages.

Users: The primary users of this book are students preparing for the SSCE biology exam, as well as teachers who use it as a teaching resource and reference guide.

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Book 3: Reading Essentials for Biology by Glencoe Science

Author: McGraw-Hill (Glencoe Science)

Description: “Reading Essentials for Biology” is a companion guide designed to support students in understanding the core concepts of biology. This resource provides simplified summaries of key topics, vocabulary support, and reading comprehension strategies to help students grasp the material more effectively. It is particularly useful for students who need additional reading support or are studying English as a second language.

Published Year: The book was published in 2006.

Size: The physical dimensions of the book are 276 x 211 x 10 mm.

ISBN: The ISBN-13 for the book is 9780078726112 and the ISBN-10 is 0078726111.

Number of Pages: The book contains 240 pages.

Users: The primary users of this book are high school students studying biology, particularly those who require additional reading support to understand the material, as well as teachers who use it as a supplementary resource to enhance their biology curriculum.


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Essential Biology Textbook Pdf By Tonad

Yo! For those who want the Essential Biology Textbook Pdf by Tonad, that one is paid. You can now keep reading. 

Essential Biology Textbook is authored by M. C Michael and it is designed for SSCE Students: WAEC, JAMB, POST JAMB and other O Level Exams. 

This blog post will provide you with an overview of the book and how to get the PDF Format. 

Download Now >> Essential Biology Textbook Pdf Download

Why Choose Essential Biology PDF?

This book will help you with both the elementary aspect of Biology to Advanced, if you need other advanced biology, check here,

  • SS1 Biology Study of the skeletal system, respiratory system, and plant and animal classifications.
  • SS2 Biology syllabus: Nutrient cycles, digestive and transport systems, respiratory systems, and more.
  • SS3 Biology syllabus: Development of new seeds, reproductive behavior, ecology, and evolution.

The Carbon Cycle

The carbon cycle is a complex series of processes through which all of the carbon atoms in existence rotate. It’s one of the Earth’s most important cycles because carbon is a component of all known life. The cycle involves the movement of carbon through the biosphere, atmosphere, oceans, and geosphere. It’s a great example of how life, the atmosphere, and the geology of Earth are all connected.

Digestive System

The digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body. Food passes through a long tube inside the body known as the alimentary canal or the gastrointestinal tract (GI tract). The digestive system includes the mouth, throat, esophagus, stomach, small intestine, large intestine, rectum, and anus. It also involves other organs that produce enzymes necessary for digestion such as the liver and pancreas.

Regulatory Mechanisms

Regulatory mechanisms in biology refer to the various processes that organisms use to maintain homeostasis, or stable internal conditions. These can include temperature regulation, pH balance, and the regulation of glucose levels. The human body, for example, maintains a constant temperature of around 37°C, and various systems work together to regulate this, including the nervous and endocrine systems.


Ecology is the branch of biology that studies the interactions among organisms and their biophysical environment, which includes both biotic and abiotic components. Topics in ecology cover ecosystems, food chains and webs, biogeochemical cycles, and biodiversity. It’s a critical field for understanding environmental issues such as habitat destruction, pollution, and climate change.


Heredity is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction. This is the process by which an offspring cell or organism acquires or becomes predisposed to the characteristics of its parent cell or organism. Through heredity, variations exhibited by individuals can accumulate and cause a species to evolve.


Variation refers to the differences in the genetic and phenotypic traits among individuals within a population. This diversity arises from genetic differences such as mutations, genetic recombination, and other processes. Variation is key to the process of natural selection and is crucial for a population’s adaptability to changing environments.


Evolution is the change in the heritable characteristics of biological populations over successive generations. Evolutionary processes give rise to biodiversity at every level of biological organization, including the levels of species, individual organisms, and molecules. It’s a central unifying concept in biology, providing a comprehensive explanation for the diversity of life on Earth.

These topics are essential for understanding the intricate web of life and the processes that sustain it. They are typically covered in the SS3 Biology syllabus and are crucial for students preparing for their final examinations.

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Taxonomic Rank 

DomainBacteria, Archaea, Eukarya
KingdomAnimalia, Plantae, Fungi, Protista, Archaea, Bacteria
PhylumChordata, Porifera, Arthropoda
ClassMammalia, Aves, Reptilia
OrderPrimates, Carnivora, Rodentia
FamilyHominidae, Felidae, Canidae
GenusHomo, Felis, Canis
SpeciesHomo sapiens, Felis catus, Canis lupus

“Essential Biology PDF made a significant difference in my understanding of complex topics.” – Sarah, Verified Buyer

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