Who gave protoplasmic streaming hypothesis for translocation?
A
De Vries
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B
Blackman
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C
Williams
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D
Hart
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Solution
The correct option is A De Vries The cytoplasmic or protoplasmic streaming hypothesis to explain translocation of sugars in plants was given by De Vries, 1885 and Curtis, 1935.
According to this theory, in a sieve tube element, organic solutes pass to all parts by cytoplasmic streaming, while they pass from one element to another through diffusion.