Phylum arthropoda consists of the animals with jointed legs. In animal kingdom it represents maximum number of species. It includes crabs, prawns, insects, spiders, scorpions, ticks, mites, centipeds, millipeds. GENERAL CHARACTERS OF ARTHROPODA CLASSIFICATION OF ARTHROPODA This phylum is divided into six classes: Onychphora, Crustacea, Chilopoda, Diplopoda, Insecta, Arachnida. CLASS : Onychophora: They occur in …
ORIGIN OF LIFE Darwin’s theory of evolution tells us how evolution occurs from simple to more complex forms. Mendel’s experiments on pea plant explained the hereditory mechanism of transfer of gene from parents to progeny. But neither of them tell us anything about how life began on Earth in the first place. In 1929, JBS …
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COMPONENTS OF ECOSYSTEM Since, the environment refers to both physical and biological conditions, it encompasses both living or biotic and non-living or abiotic components of the earth. BIOTIC COMPONENTS OF ECOSYSTEM FROM PRODUCERS TO OMNIVORES This component has living kingdom in whole biosphere. i.e. plants, animals and microorganisms. The living organisms are interconnected with one …
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POPULATION INTRODUCTION Evolution is the sequence of gradual changes from simple life forms to complex life forms. Since, the evolution involves the living organisms. So we term it as organic evolution. VARIATIONS IN A POPULATION AMONG GENETIC DRIFT Here we can observe the changes in phenotype and genotype of the individuals in a population or …
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TRANSPORTATION IN PLANTS INTRODUCTION Plants lack regular transport system like animals in transportation in plants. We know that plants prepare their food with the help of carbon di oxide and water. The place of photosynthesis is green leaves. Beside it, plants need other minerals like nitrogen and phosphorus . these minerals plant collect directly from …
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OXYGEN CYCLE INTRODUCTION It is a type of cyclic flow of nutrients between non- living components like soil, rock air and water and living organisms and micro oganism (Pseudomonas and Aeruginosa). It makes the biosphere dynamic. In oxygen cycle there is a cyclic flow of atmospheric oxygen. Photosynthesis releases oxygen in the atmosphere. Respiration absorbs …
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ANIMAL HUSBANDRY INTRODUCTION It is the scientific management of livestock. Animal husbandry is the science of rearing, breeding, disease control and utilization of animals. Animal based farming includes cattle, goat, poultry and fish farming. OBJECTIVES OF ANIMAL HUSBANDRY CATTLE FARMING In India, farmers practice cattle farming in husbandry for two purposes: milk and drought labor …
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EXPLAIN THE MECHANISM OF PHOTOSYNTHESIS INTRODUCTION It is the process by which autotrophic green plants containg chlorophyll make their own food we term it as photosynthesis to explain the mechanism of photosynthesis. Plants make their food with the help of regular inorganic substances like carbon dioxide and water in presence of sunlight and green pigment …
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RARE KIDNEY DISEASE INTRODUCTION TO THE DISORDERS OF THE EXCRETORY SYSTEM IN hemodialysis When blood accumulates high concentration of urea due to malfunctioning of kidney, then we term it as uremia. It is very dangerous which may cause different types of kidney problems. In such patients of rare kidney disease, doctor can remove urea by …
