MICROBES IN HUMAN WELFARE class 12th notes
DEFINITION 1.BIOCHEMICAL OXYGEN DEMAND (BOD): the amount of oxygen that would be consumed if all the organic matter in 1 liter of water was oxidize b…
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STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION
TERMS TO REMEMBER 1. ANIMAL BREADING: Mating or crossing of animals to improve the desirable qualities and yield or production. 2. ANIMAL HUSBANDRY …
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HUMAN HEALTH AND DISEASE
Introduction Health is affected by: (i) genetic disorders: Deficiencies with which a child is born and deficiencies/defects which the child inherits…
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Evolution class 12th biology notes
ORIGIN OF LIFE The origin of life is a unique event in the history of universe. The universe is vast. The universe is very almost 20 billion years ol…
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MOLECULAR BASIS OF INHERITANCE class 12th biology
THE DNA DNA is a long polymer of deoxyribonucleotides. The length of the DNA depends on the number of nucleotide pairs present in it. Bacteriophage l…
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Class 12th biology 1st lesson reproduction in organism mcq question and answer
1. Process of fusion of haploid cells is a. Cell cycle b. Meiosis c. Mitosis d. Syngamy 2. Maximum life span of dog is a. 20 years b. 15 years c. …
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Principles and inheritance and variation
Heredity and variation Genetics is the study of principles and mechanism of heredity and variation. Gregor Johann Mendel is known as ‘father of Gen…
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