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Statistical Measures - Population
A population has a number of group characteristics that are statistical measures unique to the population group and are not the characteristics of the individual. These group characteristics are density, natality, mortality, immigration and emigration, age distribution, dispersion, growth, regulation and genetic composition. Density or size of population, however, is its basic characteristic and is affected, by other group characteristics such as natality, mortality, immigration and emigration. any change in the density of the population implies a change in one or more of these four characteristics. The relationship between these factors is expressed as follows:
Modes of Respiration Many small organisms obtain oxygen by diffusion through their body surfaces. They do not have any specialised respiratory organs nor do they have blood ci
Q. Which is the extraembryonic membrane whose function is to store nitrogen wastes of the embryo? Is this function present in placental mammalian embryos? The allantois is the
Q. Show Artificial systems of classification of plants? Carolus Linnaeus (1707-1778) popularly known as Carl Von Linne was born on May 1707 at Result, a small village in Smalan
Physiological Regeneration This type of regeneration is a regular physiological function including the continuous replacements of cells and tissues, and thus is indispensible
What is the phototropism? The Phototropism is the movement of plant structures in response to light. The Phototropism may be negative or positive. The Positive phototropism is
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Animal disease model The second area of transgenic application in agriculture is to develop lines of animals resistant to some specific damaging diseases. While the genes of in
Development of Reserves - Conservation of Wildlife Establishment of Biological reserves, National parks, Forest reserves, Wildlife refuges and Biosphere reserves are effective
what is he importance of proteins for living beings
Autotomy and Regeneration Shedding of body parts in self-defense to avert the attention of the predator-enemy or in any other emergency is a type of autotomy (auto: self, tom
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