environmental regulation

Also referred to as population regulation, it means the total of all inhibitory factors naturally regulating the growth of population. The environment puts up its resistance after a level often less than biotic potential or even carrying capacity. Such resistance may be in the f..

Introduction - Genes do not operate to produce enzymes all the time. Each gene is normally more or less repressed (inactive); but, when a particular enzyme is needed, the relevant gene becomes active to bring about the production of that enzyme. A totally active gene can produce a very large amount..

Abiotic factors like temperature, wind, humidity, rainfall, intensity of light has its effect on the density of population. Biotic factors like organisms of other species living in the same area affect the population, as they involve in different types of food relationships. For e.g., if the popul..

. Turgidity of guard cells is regulated by K + fluxes between them and the surrounding epidermal cells. Transpiration is also influenced by environmental factors such as light, temperature, availability of soil water and atmospheric humidity. Transpiration facilitates the moveme..

A chemical or other environmental agent that produces cancer is called a carcinogen. The world Health organisation estimates that carcinogens may be associated with 60 - 90% of all human cancer. Depending upon their mode of action carcinogens are of 3 types. (1) Carcinogens that cause alt..

A comprehensive World Conservation Strategy for the judicious use of living resources has been formulated by the scientists of 100 countries. Some of the steps suggested to protect the wild life are: a) Special attention should be given to conserve the species, which fall in the category of endang..

. All invertebrates, lower chordates, cyclostomes, fishes, amphibians and reptiles have no internal mechanism for thermal regulation, and their body temperatures vary with the surrounding environmental temperatures. Such animals are called cold blooded, ectothermic or poikilothe..

All the cells of an organism receive the complete set of genes (total information) present in the fertilized egg through mitotic divisions. However, cells of an early embryo lose the potential for the expression of all the genes through the processes of induction and repression, perhaps by mechanis..

Lastly, we come to the nature and wildlife enthusiasts who are not in any way dependent on the forests. Environmentalists and Nature Conservationists, NGOs like the World Wide Fund for Nature (WWF), Centre for Science and Environment (CSE), International Union for Conservation of Nature and Natur..