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What is the role of saliva in the digestion of food?
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How are fats digested in our bodies? Where does this process take place?
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The xylem in plants are responsible for (a) transport of water. (b) transport of food
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The kidneys in human beings are a part of the system for (a) nutrition.
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How is the amount of urine produced regulated?
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What are the methods used by plants to get rid of excretory products?
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Describe the structure and functioning of nephrons.
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How is food transported in plants?
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How are water and minerals transported in plants?
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What are the components of the transport system in highly organised plants?
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What are the components of the transport system in human beings?
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How is oxygen and carbon dioxide transported in human beings?
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How is the small intestine designed to absorb digested food?
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