Chapter 29 Ecosystem by TEACHING CARE online coaching classes Chapter 28 Organisms and Populations by TEACHING CARE online coaching classes Ecosystem. The word ecosystem was coined by A.G. Tansley in 1935. This term is derived from two words, namely…
Chapter 28 Organisms and Populations by TEACHING CARE online coaching classes Ecology. Ecology deals with the various principles, which govern the relationships between organisms and their environment. Reiter first used the term ecology in 1868. Ernst Haeckel (1886)…
Chapter 27 Molecular Basis of Inheritance Part 2 by TEACHING CARE online coaching classes Genetic engineering. (i) Recombinant DNA technology Definition : Genetic engineering, a kind of biotechnology, is the latest branch in applied genetics dealing the alteration of…
Chapter 26 Molecular Basis of Inheritance Part 1 by TEACHING CARE online coaching classes Carmine is a dye extracted from the cochineal insect (Coccus cacti). Haematoxylin is a dye extracted from the heartwood of a tropical tree etc.…
Multiple allelism. Mode of origin : Genes having only two distinct alleles. If mutation occurs in the same gene but in different directions in different individuals, the population as a whole will have many different alleles of that…
Chapter 24 Principals of Inheritance and Variation Part 1 by TEACHING CARE online coaching classes Introduction. The term genetics was coined by Bateson (1960). Genetics is the study of principles and mechanism of heredity and variations. The resemblance amongst…
Chapter 23 Sexual Reproduction in Flowering Plants by Teaching Care online coaching classes Reproduction is the process of formation of new individuals from pre-existing ones. It is the means of multiplication and perpetuation of the species because the…
Chapter 22 Plant Growth and Development Part 2 by Teaching Care online coaching classes Photoperiodism (Light period): The effects of photoperiods or daily duration of light periods (and dark periods) on the growth and development of plants, especially…
Chapter 21 Plant Growth and Development Part 1 Growth. Growth in plants, as in any organism, consists of an irreversible increase in size, which is commonly accompanied by increase in solid or dry weight and in the amount…
Chapter 20 Respiration in Plants by Teaching Care online coaching classes Introduction. All organisms require continuous input of energy to carry on life process. These energy comes from cellular activities. All the cellular activities can be grouped into two categories…
