CBSE CLASS 12 BIOLOGY BOOK
Biology. NCERT/CBSE class 12 Biology book Biology. content. NCERT/CBSE class 12 Biology book Biology. 01REPRODUCTION IN ORGANISMS. National Council of Educational Research and Training (NCERT) Book for Class XII Subject: Biology. NCERT Class XII Biology Book is given below. Chapter 1. Get the NCERT Book For Biology Class 12 according to the latest syllabus of CBSE and prepare effectively for Board Exams. Click here to know more.
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Class 12 Biology Chapter 10 Microbes in Human Welfare Microbes are also referred to as micro-organisms or microscopic organisms as they can only be seen under a microscope.
They are tiny living creatures, invisible to the naked eye and are present all around us, in air, water, soil and so on. They played a key role in the evolution of the planet earth. Few microbes cause severe infections and disease that even result in death and others are the beneficial ones and harmless to our lives.
Disease-causing microbes are called as pathogens. Influenza, tuberculosis, polio, cholera, HIV are some of the best examples of disease caused by these microbes.
The most common microbes include Bacteria, protozoa viroid, some algae, Fungi, and Viruses. This chapter, deals in depth study of principles and processes involved in biotechnology. Among many techniques, modern biotechnology is the result of the following two core techniques.
India was the very first country in the world to initiate action plans and also the programmes which were called family planning to attain total reproductive health as a social goal.
It has introduced at a national level in the year to create awareness among people about various reproduction which is related aspects and by providing facilities and support for building up a reproductively healthy society.
These traits are also present on the chromosomes in the form of genes, and these genes are the characters which may be similar to one of its two parents. Gregor Johann Mendel- who is known as the Father of Genetics was the first scientist who has conducted experiments on Heredity, Inheritance and Variations. In an elaborated form. This chapter summarises your structure and details about the same.
NCERT Biology Book Class 11 & 12 Free PDF Download (2018-19)
DNA- Deoxyribonucleic Acid is considered to be the molecule of inheritance as it carries genetic information in all living organisms. It is a continuous long polymer chain of deoxyribonucleotides.
The complete DNA structure looks like a twisted ladder when researched. Chapter 7 Evolution Evolution is an elaborated study of the different forms of life, its characteristics and also the changes over these several generations.
It is the factual theory used by biologists to which study the genetic variation in a population. There are so many theories about how life originated on the planet earth.
The method of evolution is also based on the idea that all species are correlated and progressively varies with time. Chapter 8 Human Health and Disease Health can be generally defined as free from all diseases and infections. It is a state of an active and energetic condition including physical, mental, and social well-being.
Biology Class 12 - Books
A balanced diet and disciplined exercise play an essential role in maintaining the good health of an individual. A disease is not a reasonable condition, and it affects a healthy living organism.
It is broadly divided into infectious and non-infectious. Immunity is generally defined as the ability of the body to protect, defend and also fight against invading pathogens like bacteria, virus, and other foreign organisms and toxic substances.
There are two types of immunity which we learn innate immunity and acquired immunity. Chapter 9 Strategies for Enhancement in Food Production Food is the primary substance which provides all necessary nutrients to meet the body nutritional requirements for the proper functioning of our body cells. The food which we all consume contains the required amount of nutrition which are carbohydrates, proteins, vitamins and fats. Food production is a long process mainly involved in the growing, harvesting, processing, packaging, transporting, marketing, consumption, and disposal of food products.
The increase in the population, the development of food production becomes the primary issue.
Plant breeding and animal breeding are the two primary efforts to improve food production and to meet the requirements of the increasing population. Chapter 10 Microbes in Human Welfare Microbes, also called as the microorganisms are the major components of biological systems on the earth. They are present everywhere, around us, in the soil, water, air, and both in and on our body.
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They are also found in other Animals and plants. The student who is determined of achieving something, book can provide a lot of help to them. Cons: Cons are only these that book is a complete wiestion bank, which is going to provide you with every thing- boards as well as competitions.
Practice Books For Biology: I would suggest you to actually buy these practice papers. These will help you a lot in knowing at what level you are and how much more practice you need and those who are not willing to buy any of the reference books asmany of us do not buy, so it is not a big deal. You can even buy these sample papers of which we are providing you with a list below. So, you can choose any of them as all are equally important and beneficial books.
If you practice from any of these books along with taking your NCERT as base, you are definitely going to get good marks. Just prepare well and work hard. It provides you with last 10 years question papers along with their solutions and not only this, there are 5 to 6 sets of unsolved sample papers too. So, book is definitely going to help you to mKe a fair judgement for yourself.
NCERT Biology Book Class 11 & 12 Free PDF Download (2018-19)
Just buy the book and practice every single question there in the book. It is going to provide you with a lot of help and sometimes questions are repeated in the same manner as you practiced them in the book.The whole chapter is kept very clear with the help of related diagrams, figures and flow charts are explained, gives students a chance of clear learning with understanding.
Ecosystem Ecosystems: So, in this situation you will have to refer some good reference books. And this process keeps running from generation to generation. India was the very first country in the world to initiate action plans and also the programmes which were called family planning to attain total reproductive health as a social goal.
The real question is - what do you do to stand apart from the crowd? A balanced diet and disciplined exercise play an essential role in maintaining the good health of an individual. All these demands are extremely putting a lot of pressure on land, water, air and other natural resources which leads to pollution and degradation of the environment, biodiversity, and other environmental issues.