Biotechnology has revolutionized the way we live and has brought about numerous advancements in various fields such as medicine, agriculture, and industry. The NCERT Class 12 Biology Solutions for Chapter 12 Biotechnology and its Applications, covers the various applications of biotechnology in detail. NCERT Solutions for Class 12 Biology Chapter 12 – Biotechnology and its Applications Question 1: Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because − (a) bacteria are resistant to the toxin (b) toxin is immature: (c) toxin is inactive: (d) bacteria encloses toxin in a special sac. Answer: toxin is…
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Biotechnology is an exciting and rapidly advancing field that combines biology and technology to develop new products and processes that benefit human life. The NCERT Class 12 Biology Solutions for Chapter 11 Biotechnology: Principles and Processes, covers the various techniques and principles of biotechnology, including genetic engineering, recombinant DNA technology, and the production of genetically modified organisms (GMOs). NCERT Solutions for Class 12 Biology Chapter 11 Biotechnology : Principles and Processes Q1 : Can you list 10 recombinant proteins which are used in medical practice? Find out where they are used as therapeutics (use the internet). Answer : Recombinant proteins…
Microbes play a vital role in various aspects of human life, including medicine, agriculture, and biotechnology. The NCERT Class 12 Biology Solutions for Chapter 10 Microbes in Human Welfare, covers the various roles of microbes in different fields, such as food production, industrial production, and environmental bioremediation. NCERT Solutions for Class 12 Biology Chapter 10 – Microbes in Human Welfare Question 1: Bacteria cannot be seen with the naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of…
Food production is a critical aspect of human civilization and a fundamental requirement for the survival and growth of societies. The NCERT Class 12 Biology Solutions for Chapter 9 Strategies for Enhancement in Food Production, covers various strategies for improving food production, including animal husbandry, plant breeding, tissue culture, and microbial culture. NCERT Solutions for Class 12 Biology Chapter 9 Strategies for Enhancement in Food Production Question 1: Explain in brief the role of animal husbandry in human welfare. Answer: Animal husbandry deals with the scientific management of livestock. It includes various aspects such as feeding, breeding, and control diseases…
Human health and disease are complex subjects that are essential to understanding the human body’s functioning. The NCERT Class 12 Biology Solutions for Chapter 8 Human Health and Disease, cover the various types of pathogens that cause diseases, their modes of transmission, and the immune system’s responses to these pathogens. NCERT Solutions for Class 12 Biology Chapter 8 Human Health and Disease Question 1: What are the various public health measures, which you would suggest as safeguard against infectious diseases? Answer: Public health measures are preventive measures which are taken to check the spread of various infectious diseases. These measures…
Evolution is a fascinating subject that has been studied by scientists for centuries. It involves the gradual changes in species over time, leading to the development of new species. The NCERT Class 12 Biology Solutions for Chapter 7, Evolution, delves into the various theories of evolution, including Lamarck’s theory and Darwin’s theory of natural selection. NCERT Solutions for Class 12 Biology Chapter 7 Evolution Question 1: Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory. Answer: Darwinian selection theory states that individuals with favourable variations are better adapted than individuals with less favourable variation. It means that…
The genetic material of an organism carries the instructions for its growth, development, and reproduction. The NCERT Class 12 Biology Solutions for Chapter 6, Molecular Basis of Inheritance, explores the molecular mechanisms that underlie the storage, replication, and expression of genetic information. NCERT Solutions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance Question 1: Group the following as nitrogenous bases and nucleosides: Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine. Answer: Nitrogenous bases present in the list are adenine, thymine, uracil, and cytosine. Nucleosides present in the list are cytidine and guanosine. Question 2: If a double stranded DNA…
The principles of inheritance and variation are crucial to understanding how traits are passed on from one generation to the next. The NCERT Class 12 Biology Solutions for Chapter 5 Principles of Inheritance and Variation, provides a comprehensive understanding of the fundamental principles of genetics. NCERT Solutions for Class 12 Biology Chapter 5 Principles of Inheritance and Variation Question 1: Mention the advantages of selecting pea plant for experiment by Mendel. Answer: Mendel selected pea plants to carry out his study on the inheritance of characters from parents to offspring. He selected a pea plant because of the following features.…
Reproductive health is an essential aspect of overall well-being and plays a crucial role in the sustainable development of a country. The NCERT Class 12 Biology Solutions for Chapter 4, Reproductive Health, covers various topics related to reproductive health, such as maternal health, sexually transmitted diseases, and population control. NCERT Solutions for Class 12 Biology Chapter 4 Reproductive Health Question 1: What do you think is the significance of reproductive health in a society? Answer: Reproductive health is the total well being in all aspects of reproduction. It includes physical, emotional, behavioural, and social well being. Sexually transmitted diseases such as…
Human reproduction is a fascinating and complex process that involves the formation of a new human life. In NCERT Class 12 Biology, Chapter 3, “Human Reproduction,” students will learn about the various components of the human reproductive system, the process of gametogenesis, fertilization, and embryonic development. NCERT Solutions for Class 12 Biology Solution Chapter 3 Human Reproduction Question 1: Fill in the blanks: (a) Humans reproduce __________. (asexually/sexually) (b) Humans are__________. (oviparous/viviparous/ovoviviparous) (c) Fertilization is __________ in humans. (external/internal) (d) Male and female gametes are __________. (diploid/haploid) (e) Zygote is __________. (diploid/haploid) (f) The process of release of the ovum…