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Tracheae - Respiration
Insects that have successfully colonised the terrestrial environment have evolved a respiratory system very different from other land animals - the tracheal system. Apart from insects other arthropods, such as millipedes, centipedes, a few arachnids and terrestrial crustaceans have tracheae as respiratory organs.
Define Vapor-pressure lowering and Osmotic pressure? 1. Vapor-pressure lowering: the decrease in the vapor pressure of a solution containing nonvolatile solutes, compared to th
Kinds of Matter On basis of its chemical organization, matter id of three categories elements, compounds and mixture An element is composed of obviously, earth similar atoms
Why Physical Fitness is Tested? 1) To assess pre-training fitness status: Before beginning an exercise programme and allow the exercise, intensity and duration to be set at th
Explain the Expanding Frontiers of Nutrition? While the essential nutrients mentioned in Table are indispensable and our diets need to provide them all in adequate quantities,
Explain the Functionality of Hot Air Oven? Hot air oven sterilizes the object by hot dry air. It kills the microorganisms by oxidizing cellular constituents. Dry Heat is less e
The Biological Catalysis Enzyme: Biological catalysis are called enzyme. An enzyme can be defined as an organic substance that tremendously accelerates a chemical reaction w
Explain the Occurrence of vitamin B 6 Vitamin B 6 activity is attributed to the 3 compounds-pyridoxol (pyridoxine), pyridoxal and pyridoxamine, generally comprised in the vit
Sulphur (S) - Macronutrients Sulphur is present in the soil in inorganic and organic forms. In most soils organically bounds is the major S reservoir. The inorganic forms of S
Genic Type-Genetic basis of Sex Determination In some organisms, certain indepe~ident genes located on different chromosomes are responsible for sex determination. Most species
Growth-form and Structure In a community the number of species and size of their populations vary greatly. A community may have one or several species. The environmental factor
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