Basidiomycetes is a most advanced and largest group of higher fungi. It contains about 1100 genera and 25000 species. We generally call them rusts, smuts, mushroom, puff balls, toad stool, stink horns bracket fungi, and shelf fungi. Their fruiting body or basidiocarps are large and conspicuous, so we can find them easily in surroundings. Some …
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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NON-CONVENTIONAL SOURCES OF ENERGY INTRODUCTION OF ALTERNATIVE SOURCES OF ENERGY: We know that by the time conventional sources of energy will deplete soon due to improved technological progress and increased demand. To cater the rising demand, keeping a balance with limited with limited availability of conventional sources is very important. It is mandatory to look …
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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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ALLOTROPY INTRODUCTION It is the property by which an element exists in more than one form and each form had different physical properties but identical chemical properties. Elements having these different properties are allotropes. The characteristics of the elements we term as allotropy. ELEMENT SHOWING ALLOTROPY AND CATENATION Carbon exists in different allotropic forms. Some …
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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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