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Explain the theory of vital and …

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Explain the theory of vital and mass flow theory.?

Posted by Hemant Ritesh Sourashtriya 7 years ago

CBSE > Class 11 > Biology

2 answers

Kunal Bhardwaj 7 years ago

In 1815 AD, a Swedish chemist J.J. Berzelius put forward vital force theory to explain the origin of organic compound. According to this theory, organic compound are formed and synthesized only within living species( plants and animals ). ... This theory defied the vital force theory.

Kunal Bhardwaj 7 years ago

The Pressure Flow Hypothesis, also known as the Mass Flow Hypothesis, is the best-supported theory to explain the movement of sap through the phloem. ... This creates turgor pressure, also known as hydrostatic pressure, in the phloem. Movement of phloem sap occurs by bulk flow (mass flow) from sugar sources to sugar sinks.

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