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Notes of science class tenth. Science NCERT notes tenth
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Life processes: Respiration respiration respiration

Respiration respiration is defined as a process of biochemical oxidation of nutrients the presence of specific enzymes at optimum temperature in the cells to release energy for metabolic activities. it is a catabolic process in which exchange of gases takes place between the body and the outside environment. The first step is breakdown of glucose a six carbon molecule into a three carbon molecule called pyruvate or pyruvic acid. it is common to all this process of conversion of glucose to pyruvate that is glycolysis, takes place inside the cytoplasm of the all cell. After this the conversion of pyruvate into another substance depends on the presence or absence of oxygen. _________________________________________ Types of respiration 1.Aerobic respiration : The process in which large amount of energy is released in the presence of oxygen from The breakdown of the food substances is called aerobic respiration. It takes place in mitochon...

Life process-- Nutrition in animals

Heterotrophic nutrition Heterotrophic nutrition is of three types. Holozoic nutrition: Herbivores, carnivores and omnivores proposes the holozoic mode of nutrition. complex food molecules are taken in and then broken down into simpler and soluble molecules in this type of Nutrition. Saprotrophic nutrition: saprotrophs are the organisms having saprotrophic mode of nutrition. They usually feed up on dead organic matter, breaking dawn complex materials outside the body and absorption it, example fungal like that malls mushrooms yeast and bacteria. Parasitic nutrition:. parasites are the organisms having parasitic nutrition. This organisms live together or inside the body of other organisms obtain their nutrition without killing them example plasmodium, ticks etc . _________________________________________ Nutrition in amoeba Amoeba is a unicellular, omnivore organism that does not possess specialised organs for the process of Nutrition...

Respiration in plants and animals

Respiration in plants Plants need energy to grow and perform essential functions.They obtain the energy through the process of respiration. generally plants do not have any special organ to perform this process. Exchange gases through stomata and large intercellular spaces. __________________________________________ Gaseous exchange in roots the exchange of gases in roots of a plant takes place by the process of diffusion from the air present in between the soil particles. Oxygen diffuses into the root hair and passes into the root cells from where the carbon dioxide moves into the soil. Gaseous exchange in stems in woody plants gaseous exchange occurs through the small force in the stem called lenticles.on the other hand in herbaceous plants stomata on the stains aid in the respiratory process. Gaseous exchange in leaves In leaves respiration takes place by diffusion of oxygen through stomata into the cells of the leaf. Stomata are the aerating ...

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