how scientist s prove that food is transported through phloem in plants
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Phloem is the tissue that helps in the transport of food throughout the plant. The different elements of phloem include sieve tubes, companion cells, phloem parenchyma and phloem fibres. Food is transported by a special mechanism caleld as pressure flow hypothesis.
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they assumed
everything in science and maths is a hypothesis
it means we don't know if it is true or not but on the basis of their observations they conclude such things..
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